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This can be simplified to -10p = -150 p = -150/-10 p = 15
p=2L+2W p=2(150)+2(15) p=300+30 p=330
p = -12
P = 2L + 2WP/2 = L + WW = P/2 - LW = 150/2 - 45 = 75 - 45 = 30A = LW = (45)(30) = 1350 unit2
P + Q = 180 P = 4Q + 30 So (4Q + 30) + Q = 180 ie 5Q = 150 or Q = 30 Then P = 4Q + 30 = 150