Question

The amount of money that is left in a medical savings account is expressed by the equation y = negative 24 x + 379, where x represents the number of weeks and y represents the amount of money, in dollars, that is left in the account. After how many weeks will the account have $67 left in it?

Answer 1

$67 = -24x + 379$

Subtract 379 from both sides.

that gives us: $-312 = -24x$

divide both sides by -24 which equals: x = 13.

13 weeks