Answer:
6x+1+ -7x+1/4x^2-3x+5
Hope This Helps & Good Luck :)
F(x)=8+2x
f(1/2)=8+2(1/2)
=8+1
=9
Can't graph atm :/
It would be: $6.25n (the price of one set multiplied by N)
The entire figure could be taken as a trapezium
A=1/2h(a+b)
h=8, a=6 and b=10
A=1/2×8(6+10)
A=4×16
A=64sq Inch