Complete the identity.
= ?
A. tan ? + tan ?
B. cot ? + cot ?
C. tan ? + tan ?
D. -tan ? + cot ?
Answer: A
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For the given functions f and g, find the requested function and state its domain.f(x) = 
; g(x) = 
Find f ? g.
A. (f ? g)(x) = 
; {x|x ? 0}
B. (f ? g)(x) = 
; {x|x ? 3, x ? 5}
C. (f ? g)(x) = 
; {x|x ? 15}
D. (f ? g)(x) = 
; {x|3 ? x ? 5}
Solve the problem.Consider the quadratic model h(t) = -16t2 + 40t + 50 for the height (in feet), h, of an object t seconds after the object has been projected straight up into the air. Find the maximum height attained by the object. How much time does it take to fall back to the ground? Assume that it takes the same time for going up and coming down.
A. maximum height = 75 ft; time to reach ground = 2.5 seconds B. maximum height = 50 ft; time to reach ground = 2.5 seconds C. maximum height = 50 ft; time to reach ground = 1.25 seconds D. maximum height = 75 ft; time to reach ground = 1.25 seconds
Use the commutative property of multiplication to write an equivalent algebraic expression: 13x + 11.
a. x13 +11 b. 11 + 13x c. 11x + 13 d. 13 + 11x
Find the average.$27.00, $19.15, $28.25, $24.65, $16.45
A. $19.25 B. $24.65 C. $23.10 D. $28.88