Angela is getting a pedicure at a spa that also offers massages where customers pay by the minute. If Angela only gets a pedicure, it will cost her $35. If she pays for a 20 minute massage, it will cost her $50.

Write an equation in slope-intercept form where x represents the number of minutes for a massage and y represents Angela's total cost of a pedicure and a massage.

Question

Andreas Keith

Mathematics

12 June, 08:59

Angela is getting a pedicure at a spa that also offers massages where customers pay by the minute. If Angela only gets a pedicure, it will cost her $35. If she pays for a 20 minute massage, it will cost her $50.

Write an equation in slope-intercept form where x represents the number of minutes for a massage and y represents Angela's total cost of a pedicure and a massage.

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Answers (1)

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Celia Espinoza · Answer 1

This is an expression if she only gets pedicure

y = 35

If she wants to get massage, multiply the cost for a minute with the number of minutes.

Find cost per minute first

cost = 50/20

cost = 2.5

So the expression would be

y = 35 + 2.5x

y = 2.5x + 35