Answer:
135
Step-by-step explanation:
I am not sure if you have to use the substitution method but I just did (600 - 60) then divided by 4
area = 1/2 x h x b
14*9 = 126
126/2 = 63 square inches
By the chain rule,
where and .
If and , then
so that
m = -3/1
m = -3
B, the square root of 3