Question

A babysitter earns $8 an hour for babysitting
2 children and an additional $3 tip when both
children are put to bed on time. If the babysitter gets
the children to bed on time, what expression could
be used to determine how much the babysitter
earned?
A) 8x + 3, where x is the number of hours
B) 3x + 8, where x is the number of hours
C) x(8 + 2) + 3, where x is the number of children
D) 3x + (8 + 2), where x is the number of children

Answer 1

Answer: A)

Step-by-step explanation:

8x 8 is the number of money per hour

Plus 3 for a tip

Answer 2

The amount the babysitter made can be found by A) 8x + 3, where x is the number of hours.

The babysitter earns $8 per hour. Let us assume that x is the number of hours. That would mean that the amount the babysitter makes is:

= Amount per hour of babysitting x number of hours

= 8 × x

= 8x

If the babysitter puts the children to bed on time, they get an extra $3 which is what they did. The amount they earn is therefore:

= Amount made from babysitting + Tip

= 8x + 3

In conclusion, the expression that shows the total the babysitter made is 8x + 3.

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