Question

3 dave has $358.00 in his bank account. he wants to prepay his cell phone bill for the next three months. his monthly cell phone bill is $78.50. he also needs to pay his electric bill, which is $135.00. how much money will dave need to add to his account to cover all the bills?

Explanation:

Step1: Calculate total cell bill

Multiply monthly cell bill by 3: $78.50\times3 = 235.50$

Step2: Calculate total bills

Add cell bill total and electric bill: $235.50 + 135.00 = 370.50$

Step3: Find amount to add

Subtract current balance from total bills: $370.50 - 358.00 = 12.50$

Answer:

$\$12.50$