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Questions in Grade College

[Done] Have vehicles gotten more fuel-efficient over the years? Between 1960 and 1999 the size and shape of automobiles in the United States has changed almost annually. The amount of fuel consumed by these vehicles has also changed. The following table describes the average fuel consumption per year per passenger car in gallons of gasoline. | Year, $t$ | 1960 | 1970 | 1980 | 1990 | 1995 | 1997 | 1998 | 1999 | |---|---|---|---|---|---|---|---|---| | Gallons Consumed Per Passenger Car | 668 | 760 | 576 | 520 | 530 | 538 | 544 | 552 | Determine the average rate of change, in gallons of gas per year, from 1960 and 1999 and then determine what the result means in this situation. A. -0.33 gal/year; the average fuel consumption per year of a passenger car in the U.S. decreased by a third of a gallon per year. B. 0.33 gal/year; the average fuel consumption per year of a passenger car in the U.S. increased by a third of a gallon per year. C. 2.97 gal/year; the average fuel consumption per year of a passenger car in the U.S. increased by nearly 3 gal/year. D. -2.97 gal/year; the average fuel consumption per year of a passenger car in the U.S. decreased by nearly 3 gal/year.

[Done] If a trinomial has a negative coefficient for the squared term, it is usually easier to factor by first factoring out the common factor - 1. Use this method to factor the following trinomial. [tex]$-4 x^2-x+5$[/tex] Select the correct choice below and fill in any answer boxes within your choice.

[Done] Sound intensity model: [tex]L=10 \log \left(\frac{I}{I_0}\right)[/tex] [tex]L =[/tex] loudness, in decibels (dB); [tex]I=[/tex] sound intensity, in watts/[tex]m^2[/tex]; [tex]I_0=10^{-12}[/tex] watts/[tex]m^2[/tex] The loudness of a jack hammer is 96 dB. Its sound intensity is about ______. The loudness of a compactor is 94 dB. Its sound intensity is about ______.

[Done] What is the pH of a 0.048 M solution of hydrochloric acid ([tex]H^+[/tex])? A. 0.32 B. 4.80 C. -0.758 D. none of these available choices E. 1.32

[Done] Use the amortization table below to find the monthly mortgage payment for a $223,000 loan at 6.50% for 30 years. | Rate (%) | 15 Years | 20 Years | 30 Years | |---|---|---|---| | 5.00 | 7.9079 | 6.5996 | 5.3682 | | 5.25 | 8.0388 | 6.7384 | 5.5220 | | 5.50 | 8.1708 | 6.8789 | 5.6779 | | 5.75 | 8.3041 | 7.0208 | 5.8357 | | 6.00 | 8.4386 | 7.1643 | 5.9955 | | 6.25 | 8.5742 | 7.3093 | 6.1572 | | 6.50 | 8.7111 | 7.4557 | 6.3207 | | 6.75 | 8.8491 | 7.6036 | 6.4860 | | 7.00 | 8.9883 | 7.7530 | 6.6530 | | 7.25 | 9.1286 | 7.9038 | 6.8218 | State your answer in terms of dollars rounded to the nearest cent, but do not include a $ sign or the word "dollars" with your response.

[Done] BOOKLET CODE: 354 15 SUBJECT CODE: 06 58. Identify the typical examples for division Gymnospermae and Angiospermae, respectively? A. Juniper and roses B. Grasses and legumes C. Liverworts and palm trees D. Mosses and ferns 59. A student made a collection of plants having flowers and seeds from his locality and compared their embryo, leaves and stems using hand lens. He found that all his collections contain a single seed leaf embryo, long and thin with parallel veins of leaves and stem contains scattered vascular bundles. Which option contains plants that can be categorized under his collection? A. Grasses, sunflowers, teff and maize B. Grasses, orchids, teff and beans C. Grasses, orchids, teff and maize D. Grasses, orchids, teff and roses

[Done] What is the solution of [tex]$\sqrt{x^2+49}=x+5$[/tex]? A. [tex]$x=\frac{12}{5}$[/tex] B. [tex]$x=-\frac{12}{5}$[/tex] C. [tex]$x=-6$[/tex] or [tex]$x=-3$[/tex] D. no solution

[Done] Bicyclists have the same rights as other vehicle operators in Georgia. a) True b) False

[Done] Which expression is equal to the expression below? $(7 \cdot 2)^7$ A. $7 \cdot(7 \cdot 2)$ B. $7^7 \cdot 2^7$ C. $9^7$ D. $7^7+2^7$

[Done] Choose the products that complete the reaction. The chemical equation may not be balanced. [tex]HC _2 H _3 O _2+ Ca ( OH )_2 \rightarrow[/tex] ? A. [tex]Ca \left( C _2 H _3 O _2\right)_2+ H _2 O[/tex] B. [tex]Ca \left( C _2 H _3 O _2\right)_2+ CO _2+ H _2 O[/tex] C. [tex]Ca \left( C _2 H _3 O _2\right)_2+ H _2[/tex]