Write the algebraic expression described.The value of 8 dimes is 10 ? 8 = 80 cents. Likewise, the value of x dimes is 10x. If George finds 
nickels, 5x dimes, and x quarters in his change jar, express the total value of change in cents as an algebraic expression.
A. (65x - 10) cents
B. (90x - 2) cents
C. (90x + 10) cents
D. (90x - 10) cents
Answer: D
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Identify the greatest common factor.5x2 + 10x
A. 5x B. 10x C. 5 D. 5x2
Write a cost function for the problem. Assume that the relationship is linear.Fixed cost, $340; 5 items cost $5240 to produce
A. C(x) = 980x + 340 B. C(x) = 1960x + 5240 C. C(x) = 1960x + 340 D. C(x) = 980x + 5240
Solve the problem.A pendulum bob swings through an arc 50 inches long on its first swing. Each swing thereafter, it swings only 75% as far as on the previous swing. What is the length of the arc after 11 swings? Round to two decimal places.
A. 1.58 in. B. 2.11 in. C. 375.00 in. D. 2.82 in.
A company produces a new product for which it estimates the annual sales to be 5000 units. Suppose that in any given year 10% of the units (regardless of age) will become inoperative. How many units will be in use after n years? ?
A. 
B. 
C. 
D. 
E. 