After the discount, Glenda will pay 210. If you multiply the total sum by the percentage converted into a decimal, you'll typically get your answer.
2. 9.75
3. -24%
Step-by-step explanation:
For number 2, multiply the total sum by the percentage converted into a decimal point then whatever result you get, I.E 2.25 in this case, and add it to the total sum (7.50), so 7.50 + 2.25 = 9.75 or 10 rounded up.