Question

Convert 140 square feet into square inches. Calculate the value of each expression below.

3(-9 + 17)

5(-8) - 21

3(2 * 3)^3

A) 24,360; -5; 243

B) 24,500; -8; 729

C) 25,200; -13; 2,187

D) 25,600; -18; 5,184

Answer 1

To convert 140 square feet into square inches, multiply by the conversion factor. The value of the expressions is 24,500; -8; 729.

Step-by-step explanation:

To convert square feet into square inches, you need to multiply the number of square feet by the conversion factor, which is 144 square inches per square foot. So, to convert 140 square feet into square inches, you would multiply 140 by 144. The result is 20,160 square inches.

Now, let's calculate the value of each expression:

3(-9 + 17) = 3(8) = 24

5(-8) - 213 = -40 - 213 = -253

(2 * 3)^3 = 6^3 = 216

Therefore, the correct option is B) 24,500; -8; 729.