What is the total surface area of a cube with a volume of 729 ft3?
a. 405 ft2
b. 162 ft2
c. 486 ft2
d. 891 ft2

Answers:

See below.

Step-by-step explanations:

(A) This equation evaluates the cost to ship 100 lbs of wheat, which equals $130:

C(100) = 1.28(100) + 2

C(100) = 128 + 2

C(100) = 130

(B) The cost to ship 250 lbs of wheat would be $322:

C(250) = 1.28(250) + 2

C(250) = 320 + 2

C(250) = 322

(C) If you had $50, you could ship 37.5 lb of wheat:

C(x) = 50

C(x) = 48 + 2

C(x) = 1.28(37.5) + 2