Question

PLEASEEE HELP ME!!! I NEED THE ANWER ASAP!!!

I WILL GIVE YOU 30 POINTS
Emily sells ice cream bars at the beach. In addition to a fixed salary, she earns a commission for each ice cream bar she sells. The table shows Emily's total earnings, y, from selling x bars of ice cream:

Ice Cream Sales and Earnings
Number of Bars Sold (x)
Total Earnings (dollars) (y)
0
30
1
33
2
36
3
39
Which equation best shows the relationship between x and y? (5 points)

Group of answer choices

y = x + 36

y = 3x + 36

y = x + 30

y = 3x + 30

Answer 1

y = 3x + 30

Explanation:

This is what the table should look like.

Number of Bars Sold (x) Total Earnings (dollars) (y)

0 30

1 33

2 36

3 39

When x = 0, y = 30. The point (0, 30) is the y-intercept.

As x goes up by 1, from 0 to 1, from 1 to 2, from 2 to 3, y goes up by 3, from 30 to 33, from 33 to 36, from 36 to 39.

A change of 1 in x results in a change of 3 in y.

That is a slope of 3 since

slope = (change in y)/(change in x)

The equation of a line in slope-intercept form is

y = mx + b

We have m = 3 and b = 30, so the equation is

y = 3x + 30

Answer: 3x + 30