Question 39293
a) A = LW = (2x-7)(x+14) = 2x^2 + 28x - 7x - 98 = 
2x^2 + 21x - 98
b) P = 2L + 2W and so plugging in we get
P = 300 = 2(x+9) + 2(2x+15)
300 = 2x + 18 + 4x + 30
300 = 6x + 48
6x = 252
x = 42