1) The expression for the perimeter of a rectangle with a length of 8 feet and perimeter of 40 feet is
40 ft = 21 + 2w
P=2(8 ft) + 2w
P = 21 + 2(8 ft)
40 ft = 2(8 ft) + 2w

answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5

don't report but were is the digram

step-by-step explanation: