Write a chain rule formula for the following derivative.
for w = f(x, y, z); x = g(r, s, t), y = h(r, s, t), z = k(r, s, t)
A. 
= 
+ 
+ 
B. 
= 
+ 
+ 
C. 
= 
+ 
+ 
D. 
= 
+ 
Answer: A
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Find the product.(2z2 - 5z - 1)(z2 + 5z - 4)
A. 2z4 + 10z3 - 33z2 + 15z + 4 B. 2z4 + 5z3 - 34z2 + 15z + 4 C. 2z4 + 5z3 - 33z2 + 15z + 4 D. 2z4 + 10z3 - 34z2 + 15z + 4
Solve the equation.9(k + 7) - (8k + 2) = -3
A. {- 64} B. {8} C. {64} D. {58}
Translate the sentence into a mathematical equation. Be sure to identify the meaning of all symbols.The surface area of a sphere is 4? times the square of the radius.
A. If S represents the surface area and r the radius, then 4?S =r2. B. If S represents the surface area and r the radius, then S = ?r2. C. If S represents the surface area and r the radius, then S = 4?r2. D. If S represents the surface area and r the radius, then S = 4?r.
Solve the problem.The recipe for a chocolate chip cake calls for 
pound of chocolate chips. If a bakery wants to make 20 cakes, how many pounds of chocolate chips will they need?
A. 20 pounds B. 5 pounds C. 16 pounds D. 4 pounds