Respuesta :
Spent on gas this month = $50.
Predicted spent of gas next month = $50 * 1.08
Predicted spent of gases for the four months:
$50 * 1.08
$50 * 1.08^2
$50 * 1.08^3
$50 * 1.08^4
Total spent for the four months: $50 (1.08 + 1.08^2 + 1.08^3 + 1.08^4) = $50 * (4.8666) = $243.33, which is the option D. 243.33
Predicted spent of gas next month = $50 * 1.08
Predicted spent of gases for the four months:
$50 * 1.08
$50 * 1.08^2
$50 * 1.08^3
$50 * 1.08^4
Total spent for the four months: $50 (1.08 + 1.08^2 + 1.08^3 + 1.08^4) = $50 * (4.8666) = $243.33, which is the option D. 243.33