Explanation:
Write an equation to represent the following situation. Wilbur has $50 in his savings account. He adds $30 each week to his account. How many weeks will it take for him to have $260?
let x = number of weeks
equation = beginning balance + 30x = 260
so:
50 + 30x = $260
solving:
50 + 30x = $260
subtract 50 from both sides:
50 + 30x - 50 = $260 - 50
30x= $210
divide both sides by 30:
30x/30= $210/30
x = 7 weeks