Jessica’s electricity bill costs $32.44 per month plus $1.34 per kilowatt hour. how many kilowatt hours can she use and keep her bill to no more than $87? enter a whole number

 The required number of kilowatt hours is 40.71.

Step-by-step explanation:  Given that Jessica’s electricity bill costs $32.44 per month plus $1.34 per kilowatt hour.

We are to find the number of kilowatt hours that she can use and keep her bill to no more than $87.

Let x represents the number of kilowatt hours that Jessica can use to keep her bill to no more than $87.

Then, according to the given information, we have

Thus, the required number of kilowatt hours is 40.71.

so, converting firstly the mixed fractions to improper fractions and then "adding".