Im not smart im not that sure of my answer but 23.3
K:A
5:3 (before)
15:9
since the total number of stamps didn't change, the total ratio should be the same.
7:5(after)
14:10
so this means 1 unit is 10stamps.
14-10=4
4 X 10= 40
Kaye have 40 more stamps than Alberto.
Answer:

Step-by-step explanation:
Exponents are basically just saying how many times the number is multiplied by itself.
In the expression
, we can see that 10 is being multiplied by itself 5 times.
So the exponent becomes 5, and the base is 10.
.
Hope this helped!
(28 : 100) *6 = 1.68 (tax)
28 + 1.68 = 29.68 (total cost)