Solve the problem.A company knows that unit cost C and unit revenue R from the production and sale of x units are related by 
Find the rate of change of revenue per unit when the cost per unit is changing by 
and the revenue is 
A. $50
B. $266.8
C. $1350
D. $808.4
Answer: C
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Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (8, 1, -1) for ln 
- exy+z2 = 0.
A. 
B. 
C. 
D. 
Add or subtract as indicated.-5 - 6
A. 11 B. -1 C. 1 D. -11
Write an algebraic equation and use it to solve the problem.During a road trip, Tonya drove one-third the distance that Lana drove. Mark drove 12 miles more than Lana. The total distance they drove on the trip was 530 miles. How many miles did each person drive?
A. Tonya drove 70 miles, Lana drove 210 miles, and Mark drove 222 miles. B. Tonya drove 222 miles, Lana drove 666 miles, and Mark drove 678 miles. C. Tonya drove 666 miles, Lana drove 222 miles, and Mark drove 210 miles. D. Tonya drove 74 miles, Lana drove 222 miles, and Mark drove 234 miles.
Solve the problem.The point of intersection of three or more edges of a polyhedron is called a(n) 
.
A. face B. edge C. polyhedron D. vertex