Answer:
28 dollars
Explanation:
The scarf costs $7 and a sweater costs 4 times as much. 4 times as in 4 ×, in order to find the price of a sweater simply times the cost of the scarf by 4.
7 × 4 = 28
= 28 dollars
The cost of a sweater will be "28 dollars".
I hope this helps.