If your taking about question three, the answer would be B.) because an exponent added to a number is basically the number multiplied by itself by them number amount in the exponent(example: 5 to the power of 2 would be 5x5).
First draw a rectangle. Label the longer sides as 20 feet long each. 20 + 20 = 40. that means there is 16 feet of fencing left for the shorter sides. This means that each of the shorter sides is 8 feet long <span />
