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Questions in Grade College

[Done] Consider a circle whose equation is $x^2+y^2-2 x-8=0$. Which statements are true? Select three options. A. The radius of the circle is 3 units. B. The center of the circle lies on the $x$-axis. C. The center of the circle lies on the $y$-axis. D. The standard form of the equation is $(x-1)^2+y^2=3$. E. The radius of this circle is the same as the radius of the circle whose equation is $x^2+y^2=9$.

[Done] Identify the author (if known) and the work from which the following quotations are taken, along with a brief explanation of the importance of the quote to the larger text it is from: "Why in the world do you walk sideways like that?" said a Mother Crab to her son. "You should always walk straight forward with your toes turned out."

[Done] (3) $3 \div \frac{1}{4}$

[Done] Stereo Inc. sells a stereo system for $200 down and monthly payments of $30 for the next 2 years. If the interest rate is 1.75% per year, find: a) The cost of the stereo. b) The total amount of interest paid.

[Done] Given: [tex]\begin{array}{l} 2 x-3 y+z=0 \\ 3 x+2 y=35 \\ 4 y-2 z=14 \end{array}[/tex] Which of the following is a solution to the given system? A. (2,3,5) B. (3, 2, 0) C. (1, 16, 0) D. (7,7,7)

[Done] where [tex]$Q$[/tex] is total output, [tex]$K$[/tex] is capital stock, [tex]$L$[/tex] is labour stock and [tex]$A$[/tex] and are positive constants, exhibit constant returns to scale. (ii) What returns to scale does [tex]$Q=5 K^{-0.25} L^{0.6}$[/tex] exhibit?

[Done] The semisolid material that suspends and supports the collagen fibers and is part of the organic materials in the matrix of bone is the __________ substance.

[Done] According to the logical testing order, which circuit is tested first? A. Reference voltage B. Low reference ground C. Chassis ground D. Battery positive voltage

[Done] When $20 \%$ was taken off from the price of an item, K 480 was left. Find the original price of the item.

[Done] True or False: Because the earliest philosophers saw unity and constant change in the universe, they were seeking one substance which accounted for all the change in the universe.