Answer:
The solution is given by s=9 because it makes the value of 3s+12 equal to 21.
Step-by-step explanation:
If you replace s with 9 you will get 21
Answer:
a,b
Step-by-step explanation:
245-132=x
since riley has 132 out of 245, you would subtract her number from the original number and get sierra's number of minutes which is x