3x-6+10x+15=35
10x+3x=35-15+6
13x=26
x=2
F(-3) = 8
Plug -3 into x and just solve it.
X is the number of hours studied, so replace x with 3 in the equation:
y = 6.8(3) + 60
y = 20.4 + 60
y = 80.4
Round down to 80.
The answer would be A.
Answer:
So the perimeter is 2(16+x) or 32+2x. The area is 8(x+8) or 8x+64.
Step-by-step explanation:
