Answer: Crystal will earn $11.81.
Step-by-step explanation:
Since we have given that
Cost per hour mowing lawns = $5.25
Let the number of hours be 'h'.
Let the amount of money be 'm'
So, According to question, we get
\(m=5.25\times h\\\\m=5.25h\)
Here h = 2 hours and 15 minutes
So,
\(h=2\frac{15}{60}\\\\h=2\frac{1}{4}\\\\h=\frac{9}{4}\)
So, Crystal will earn if she works for 2 hours and 15 minutes will be
\(m=5.25\times \frac{9}{4}\\\\m=\frac{47.25}{4}\\\\m=\$11.81\)
Hence, Crystal will earn $11.81.
