Solve the problem.A square box top measures 
in. on each side. Using the formula 
find the area of the box top.
A. 
in.2
B. 1600 in.2
C. 
in.2
D. 
in.2
Answer: D
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Express the integrand as a sum of partial fractions and evaluate the integral.
dx
A. 4 ln 
+ 
+ C
B. 2 ln 
- 
+ C
C. 4 ln 
- 
+ C
D. 4 ln 
+ 
+ C
Solve.When Milo got promoted at work, he received a 20% pay raise. He now earns 
per year. What was his annual salary before his raise?
A. $62,400 B. $52,000 C. $12,480 D. $10,400
Solve the problem.At Allied Electronics, production has begun on the X-15 Computer Chip. The total cost function is given by 
and the total profit function is given by 
, where x represents the number of boxes of computer chips produced. The total revenue function, R(x), is such that 
. Find R(x).
A. R(x) = 49x - 0.3x2 B. R(x) = 46x - 0.6x2 C. R(x) = 47x + 0.3x2 D. R(x) = 47x - 0.3x2
Solve the problem.Suppose f(x) = 33.4 + 1.2log (x + 1) models salinity of ocean water to depths of 
at a certain latitude. x is the depth in meters and f(x) is in grams of salt per kilogram of seawater. Approximate the depth (to the nearest tenth of a meter) where the salinity equals 35.
A. -1.0 g/kg B. 22.5 g/kg C. 20.5 g/kg D. -0.9 g/kg