Which answer describes the calculations that could be used to solve this problem? chelsea bought 6 tickets for the county fair. each ticket cost $7. she gave the clerk $50. how much change would chelsea get?
a. multiply $50 × 6. then add $7 to the product.
b. multiply 6 × $7. then subtract the product from $50.
c. add $7 $6. then subtract the sum from $50.
d. divide $50 ÷ 6. then add $7 to the quotient.