Question

Jessica makes $15 per day as a lifeguard. If her day involves any swim lessons, she makes and additional $4 an hour for every
hour of swim lesson.
How many hours does Jessica need to work to make $39 in a day.
"HINT: Write and Solve an equation to represent the number of hours, h, Jessica taught swim lessons if she earned $39 in a day.
day.
4 hours
13.5 hours
6 hours
2.3 hours

Answer 1

Answer:

6 Hours

Step-by-step explanation:

First you have to make an expression to represent whar she makes with the information that you know.

You know that Jessica make $4 for every swim lesson & she gets $15 per day regardless of the hours/number of lessons; so the expression would be 4x+15.

Now that you know the expression, you have to make an equation that has 39 as the total that she makes. So the new equation would be 39=4x+15.

Now you have to isolate and solve for x; so subtract 15 from both sides; youll end up with 24=4x.

To find x you have to isolate it from the coefficient so you divide 4 from both sides and end up with 6=x.

So x=6.