Part a
joan bought a soft drink for 3 dollars and 8 candy bars. she spent a total of 43 dollars. how much did each candy bar cost? which equation matches this problem?



part b
how much did each candy bar cost?

3 + 8x = 43

Each candy bar costs $5

Step-by-step explanation:

Hi, to answer this question we have to write an equation using the information given:

We have to add the price of the soft drink (3) and; the product of the price of each candy bar (x) and the number of candy bars purchased (8).

That expression must be equal to the total amount of money spent.(43)

3 + 8x = 43

Solving for x:

8x = 43 -3

8x = 40

x =40/8

x =5

Each candy bar costs $5

-2x-4

step-by-step explanation:

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)