Answer:
The answer is 21.
Step-by-step explanation:
If the board was 7 feet long and each piece was cut into 1/3 of a foot, that means that there are actually 21 pieces
I put a picture if it helps...
to figure out the area you have to use the formula 1/2 base times height.
31.25
the answer is c y=-3.6x+12.8
