andre has $44. he must save at least $120 plus 7% sales tax to buy an electronic table if he saves half the $15 he makes each week, after how many weeks will he have enough money to buy the tablet

Answer: 12 (rounded)

Step-by-step explanation:

Andre already has: $44

must save: $120 + 7% = $128.4

half of $15 (15/2) : $7.50

in finding out how much more we need, we subtract what Andre already has and the total needed which will be: 128.4 - 44 = $84.4

7.50 * 11=82.5

(round to 12)

7.50 * 12 = 90

so Andre will have to wait 12 weeks until he has enough money to buy the tablet, and after he will have $5.60 left over.