The amount of money that is left in a medical savings account is expressed by the equation y = -24x+ 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?

y = amount left so y = 67

rewrite the equation as:

67 = -24x+379

subtract 379 from both sides

-312 = -24x

 divide both sides by -24

x = -312 / -24

x = 13

the answer is 13 weeks

If x is the number of years from now, that means the current population is when x=0

Therefore, we plug this into the equation:

f(x) = 1200(0.8)^0 = 1200 elk at the park currently