Solve the problem.A company has found that its rate of expenditure (in hundreds of dollars) on a certain type of job is given by 
where x is the number of days since the start of the job. Find the total expenditure if the job takes 2 days.
A. $20
B. $1600
C. $16
D. $2000
Answer: D
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An airplane flies from one city in a straight line to another city, which is 360 kilometers north and 150 kilometers west of first city. How far does the plane fly? ?
A. 150 km B. 390 km C. 255 km D. 360 km E. 350 km
Find the center (h, k) and radius r of the circle with the given equation. x2 + 2x + 1 + y2 - 16y + 64 = 64
A. (h, k) = (1, -8); r = 64 B. (h, k) = (-1, 8); r = 8 C. (h, k) = (-8, 1); r = 64 D. (h, k) = (8, -1); r = 8
Add or subtract. Simplify by combining like radical terms, if possible. Assume all variables and radicands represent nonnegative numbers.2 
+ 
A. 3 
B. 6 
C. 2 
+ 
D. 5 
Given the polynomial function f(x), find the rational zeros, then the other zeros (that is, solve the equation 
), and factor f(x) into linear factors.f(x) = x4 + 12x3 + 31x2 - 12x - 32
A. -8, -4, 1, multiplicity 2; f(x) = (x + 8)(x + 4)(x - 1)2 B. -4, -1, 1, 8; f(x) = (x + 4)(x + 1)(x - 1)(x - 8) C. -1, 1, 4, 8; f(x) = (x + 1)(x - 1)(x - 4)(x - 8) D. -8, -4, -1, 1; f(x) = (x + 8)(x + 4)(x + 1)(x - 1)