Answer:
a. We spent all together 40.2+24.5+37.8=$102.50.
b. We saved 19.8+10.5+7.2=$37.50
c. 
Step-by-step explanation:
To find the amount we spend, we multiply the original price by the decimal conversion of each fraction. Then we add the amounts together.
- Sneakers cost $60 and you bought them at 2/3=0.6666....
60(0.67)=$40.20 and saved $19.80
- Sweater costs $35 and you bought it at 7/10=0.7
35(0.7)=$24.50 and saved $10.50
- A jacket costs $45 and you bought it at 5/6=0.8333...
45(0.84)=$37.80 and saved $7.20
We spent all together 40.2+24.5+37.8=$102.50.
We saved 19.8+10.5+7.2=$37.50
We could of spent paying regular price 60+35+45=$140. To find the fraction we place the total we actually paid over the total regular price.

Answer:
(6x)*(4x^7) = (6*4)*(x*x^7) = 24*x^8
(6x)*(4x^7) = 24*x^7 is wrong in calculation of x
Hope this helps!
:)
Answer:
12
Step-by-step explanation:
1/5 of 30 is 30/5 = 6
1/2 of (30 -6) = 12 . . . half of those remaining after mint icing
The other half of those remaining is also 12 cupcakes. So, 12 cupcakes will get vanilla icing.