Divide.
÷ 
A. 
B. 1
C. -1
D. 
Answer: C
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Solve the problem.A certain company has found that its expenditure rate per day (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 expenditure if the job takes 8 days.
A. $22 B. $2200 C. $11,200 D. $112
Find the exact value of y, or state that y is undefined.y = sin-1 
A. ?
B. - 
C. 
D. 
Use the power rules for exponents to simplify the expression. Write the answer in exponential form.
7
A. 
B. 177
C. 
D. 
Solve the problem.The beacon on a lighthouse 40 m from a straight shoreline rotates twice per minute. Find dx/dt where x is the distance along the shoreline from the point on the shoreline closest to the lighthouse and the point where the beam hits the shoreline.[Hint: Find an equation relating ? and x where ? is the angle between the beam of light and the line from the lighthouse to the shoreline. Use the chain rule and express d?/dt in radians per minute.]
A. 
= 160? sec ? tan ?
B. 
= 160? sec2?
C. 
= 40 sec2?
D. 
= -160? csc2?