When substituting, you want to take the y value from one equation and plug it into the y variable in the other equation to find the x value. When you find the c value, you plug the number into one of the equations to get your y value.
Answer:
b. c(p) = 0.42p
Step-by-step explanation:
you are multiplying the cost (0.42) by the pounds (p)
F(6) = 7(6) - 4
f(6) = 42 - 4
f(6) = 38
Hope this helps!
The ratio is 21.1 now give me my 33 dolar