Totsakans bike shop rents bikes for $15 plus $7 per hour. ming paid $50 to rent a bike. for how many hours did she rent the bike?

5 hours

Step-by-step explanation:

Set up an equation where y=total cost and x= hours

y=7x+15

Substitute 50 for y, the total cost, and solve for x, the total hours

50=7x+15, Subtract 15 from both sides

35=7x, Divide both sides by 7 to get x alone

x=5

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2