Simplify the expression by performing the indicated operations.
? 
- 5
A. -
B. -17
C. 9 - 20
D. 6 - 20
Answer: B
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Replace the Cartesian equation with an equivalent polar equation.x = 6
A. r = 6 sec ? B. r = 6 cos ? C. r = 6 csc ? D. r = 6 sin ?
Simplify. Write answers without negative exponents. Assume that all variables represent nonzero real numbers.
-3
A. 
B. 
C. 
D. 
Determine whether the given expression is a polynomial. If it is, write it in standard form.8x + 10 + 8x2
A. Yes; 8x2 + 8x + 10 B. No
Solve the problem.The average height of a boy in the United States, from birth through 60 months, can be modeled by 
where y is the average height, in inches, of boys who are x months of age. What would be the expected difference in height between a child 36 months of age and a child 25 months of age?
A. 43.1 inches B. 17.4 inches C. 2.9 inches D. 4.9 inches