Answer:
5
Step-by-step explanation:
First off find how many bowls and vases combined
12 bowls and 8 vases therefore 20
to find 1/4 of a number divide by 4
therefore, 20/4 is 5
3b^2 - x = -9b^2
x = 3b^2 +9b^2
x = 12b^2
3b^2 -12b^2 = -9b^2
hope this will help you
7, 14, 21, 28, 35, 42, 49... 7 cars will need. to be washed to reach $49
First place: Liz
Faster: Amanda
Longest time: Steve
