Answer:
5
Step-by-step explanation:
if the area is 15 you would divide 15 by 3 and you'll get the length of 5
5 feet
42.40
Answer: 16
multiplying by negative exponents can be a little tricky. So (1/4x)^-2 becomes 16/x^2 = __/x^2 so the missing number is 16
