holly earns $30 for babysitting 5 hours. she earns $28 when she does chores for 4 hours. which compares the…

holly earns $30 for babysitting 5 hours. she earns $28 when she does chores for 4 hours. which compares the unit rates?\nthe unit rate for babysitting is $2 per hour more than the unit rate for doing chores.\nthe unit rate for babysitting is $1 per hour more than the unit rate for doing chores.\nthe unit rate for doing chores is $1 per hour more than the unit rate for babysitting.\nthe unit rate for doing chores is $2 per hour more than the unit rate for babysitting.

holly earns $30 for babysitting 5 hours. she earns $28 when she does chores for 4 hours. which compares the unit rates?\nthe unit rate for babysitting is $2 per hour more than the unit rate for doing chores.\nthe unit rate for babysitting is $1 per hour more than the unit rate for doing chores.\nthe unit rate for doing chores is $1 per hour more than the unit rate for babysitting.\nthe unit rate for doing chores is $2 per hour more than the unit rate for babysitting.

Answer

Explanation:

Step1: Calculate babysitting unit - rate

The unit - rate for babysitting is calculated by dividing the total earnings by the number of hours. So, the unit - rate for babysitting $r_1=\frac{30}{5}=6$ dollars per hour.

Step2: Calculate chore - doing unit - rate

The unit - rate for doing chores is calculated by dividing the total earnings by the number of hours. So, the unit - rate for doing chores $r_2 = \frac{28}{4}=7$ dollars per hour.

Step3: Compare the unit rates

Find the difference between the two unit rates: $r_2−r_1=7 - 6=1$ dollar per hour. Since $r_2>r_1$, the unit rate for doing chores is $1$ dollar per hour more than the unit rate for babysitting.

Answer:

The unit rate for doing chores is $1 per hour more than the unit rate for babysitting.