Final answer:
Dezirae would need to work approximately 27 hours to earn at least $200 for babysitting.
Step-by-step explanation:
To calculate the number of hours Dezirae needs to work in order to earn at least $200 for babysitting, we can use the formula:
Hours worked = Amount needed / Hourly wage
Plugging in the given values, we have:
Hours worked = $200 / $7.50
Simplifying this division, we get:
Hours worked = 26.67
Since time cannot be fractional, Dezirae would need to work approximately 27 hours to earn at least $200 for babysitting.