Find the derivative.y = x7/8
A. 
x1/8
B. 
x-7/8
C. 
x-1/8
D. 
x1/7
Answer: C
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Evaluate the line integral of f(x,y) along the curve C.f(x, y) = y + x, C: x2 + y2 = 36 in the first quadrant from (6, 0) to (0, 6)
A. 72 B. 144 C. 36 D. 0
Solve the problem.A firm is considering a new product. The accounting department estimates that the total cost, C(x), of producing x units will be C(x) = 80x + 3460.The sales department estimates that the revenue, R(x), from selling x units will be R(x) = 90x,but that no more than 445 units can be sold at that price. Find and interpret (R - C)(445).
A. $79,110 profit, income exceeds cost It is worth it to develop product. B. $791 profit, income exceeds cost It is worth it to develop product. C. $990 profit, income exceeds cost It is worth it to develop product. D. -$990 loss, cost exceeds income It is not worth it to develop product.
Solve. Write a mixed numeral for the answer.Ellen is knitting a scarf with one 7
-inch blue stripe, one 4 -inch green stripe, and one 2
-inch white stripe. How wide is the scarf?
A. 14
in.
B. 
in.
C. 
in.
D. 4
in.
Solve.The sum of a number and 6 times its reciprocal is -5. Find the number(s).
A. -2 B. -2 or -3 C. 2 or 3 D. -4 or 1