Abdoulaye is saving up to buy a new phone. He already has $70 and can save an additional $10 per week using money from his after school job. How much total money would Abdoulaye have after 9 weeks of saving? Also, write an expression that represents the amount of money Abdoulaye would have saved in w weeks.
After 9 weeks of saving, Abdoulaye would have saved:
$70 + ($10 per week x 9 weeks) = $70 + $90 = $160
The expression that represents the amount of money Abdoulaye would have saved in w weeks is:
$70 + ($10 per week x w weeks) = $10w + $70