I think it would be layer 4
First, use the distance formula to find in the distance. Then use 1/2bh (formula for area of a triangle) to find the triangle’s area.
Emma distance = x
Mannay distance = 40 in
Relation: 40 in = [4/5] x
Solve for x: x = 5*40in / 4 = 50 in
Answer: option B. 50 inches.
If you are meaning Percent... (which I believe you are) .8 is the same as .80, and for percent, take away the decimal and put a percent sign next to it. your answer is 80%
