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Questions in Grade College

[Done] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Done] What is required for an electric charge to flow through a wire? A. zero resistance in the wire B. a balance of electric potential C. high resistance in the wire D. a difference in electric potential

[Done] Find the differential of the function [tex] \begin{array}{c} y=e^{4 x} \\ d y=\square \end{array} [/tex]

[Done] Four students in Ms. Alton's class shared the correlation coefficients derived from their data as follows: Student A: [tex]$r=-0.87$[/tex] Student B: [tex]$r=-0.78$[/tex] Student C: [tex]$r=0.79$[/tex] Student D: [tex]$r=0.86$[/tex] Whose data had the strongest correlation? A. Student A B. Student B C. Student C D. Student D

[Done] Which statement about the simplified binomial expansion of $\left(a+b^2\right)^n$, where $n$ is a positive integer, is true? A. The exponent of $b$ will always be even. B. The exponent of a will always be odd. C. The sum of the exponents of $a$ and $b$ will always equal $n$. D. The sum of the exponents of $a$ and $b$ will always equal $n-1$.

[Done] Let $D=\{6,9,11\}, E=\{6,8,9,10\}$ and $F=\{5,7,8,9,11\}$. List the elements in the set $D \cup E$. $DUE = \square$ (Use commas to separate answers.)

[Done] Use PMT = $\frac{\text { to determine the regular payment amount, rounded to the nearest dollar. The price of a home is } $174,000 \text {. The }}{[-nt]}$ requires a 20% down payment and three points at the time of closing. The cost of the home is financed with a 30-year fixed-rate mortgage at 1 Complete parts (a).through (e) below. a. Find the required down payment. $ 34800 b. Find the amount of the mortgage. $ 139,200 c. How much must be paid for the three points at closing? $ $\square$ (Round to the nearest dollar as needed.)

[Done] Which of the following types of effects does electricity exhibit? A. magnetic B. magnetic and thermal C. magnetic and chemical D. magnetic, thermal, and chemical

[Done] What are standards designed to do? Check all that apply. A. protect consumers B. support domestic industries C. limit imports D. ensure safety E. offer domestic industries an advantage

[Done] Which of the following is the inverse of $y=6^x$? A. $y=\log _6 x$ B. $y=\log _x 6$ C. $y=\log _{\frac{1}{6}} x$ D. $y=\log _e 6 x$