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To find out how many hours Christiana needs to work to make $130 for her car insurance, we first account for the $18 tip she will receive.
1. Subtract the tip from the total amount she needs:
\[
130 - 18 = 112
\]
So, she needs to make $112 from her hourly wage.
2. Christiana makes $14 per hour. To find out how many hours she needs to work to earn $112, divide $112 by her hourly wage:
\[
\frac{112}{14} = 8
\]
Therefore, Christiana should work **8 hours** to make $130 after accounting for her tip.