Question

1. janelle is having a room added on to the back of her house. the contractor quoted her a price of $125 per square foot. if the room measures 15 ft. by 20 ft., how much will she pay for the addition? $40,000 $28,125 $11,250 $37,500

Explanation:

Step1: Calculate room area

The room is rectangular. The area formula for a rectangle is $A = l\times w$, where $l = 20$ ft and $w = 15$ ft. So $A=20\times15 = 300$ square - feet.

Step2: Calculate total cost

The cost per square - foot is $125$. To find the total cost $C$, we multiply the area $A$ by the cost per square - foot. So $C = 125\times A=125\times300=37500$.

Answer:

$37,500$ (corresponding to the last option)