Answer:
18
3/4 equals to .75 if you multiply .75 with 21 you get 18
Answer:
A is function.
Step-by-step explanation:
20% of 65 = 65 * 1/5, which is 13. so 20% of 65 is $13. so a discount of 20% = 65-13 which is $52
Rx - st = r
Rx = r + st Add st to both sides
Rx - r = st Subtract r from both sides
(Rx - r)/t = s Divide t on both sides ( to isolate s)
