Answer:
24-(L times 2) then divide the awnser by 2
Step-by-step explanation:
2(l+b)
2*4+2*b=24
8+2b=24
2b=24-8
2b is 16 so b is 16/2
which is 8
E
41/8
-225
f(-5)= 3(-5)^2
f(-5)= -15^2