F (1) = -2
hope this helps :)
Answer:
The correct option is 'c' <em>cross-multiplication</em>
Step-by-step explanation:
We know from the slope intercept form that y=mx+b so the y intercept is 12 while every hour the cost goes up by 8
Area of rectangle= base x height
6x4=24
Area of triangle= 0.5 base x height
We have the height but we don’t have the base, to calculate the base we subtract 10-6 which equals to 4
0.5 x 4 x4 =8
Area of a semicircle= o.5 x pi x r^2
We have the diameter and to find the radius we divide it by 2
4/2 = 2
0.5 x pi(or 3.14) x 2^2
=6.28
Total area = 24 + 8+ 6.28 =38.28cm^2
