ANSWER
D. 13
EXPLANATION
We have
To find
means we want to find an x-value whose image is 3.
We cross multiply,
Expand:
Combine like terms,
Answer:
Step 1 (IM AM NOT SURE NOT MY FAULT IF ITS WRONG)
Step-by-step explanation:
If the question is what I think it is, then it's simple. All you need to do is divide 420 by 15; and you'll get the answer: 28.
Pyramid Surface Area = (½ * Perimeter of Base * Slant Height) + Base Area
Base perimeter = 4 * 18 = 72 inches
Base Area = 18*18 = 324 square inches
Pyramid Surface Area = (.5 * 72 * 12) + 324
Pyramid Surface Area = 432 + 324
Pyramid Surface Area = 756 square inches
Source:
http://www.1728.org/volpyrmd.htm
