Answer:
The value of 
Step-by-step explanation:
We have

Now we need to find


He bought 36 baseball cards. Since 3/4 of the 48 cards are baseball cards, you need to find 75% of 48, which is 75*48, which is 36 cards. Hope this helps.
Answer:

Step-by-step explanation:
The reason is because you don't know the Inital amount she bought and because she visits two days in a row you would multiply
Multiply the constants. Multiply the variables according to the rules of exponents.
Answer:
$20.52
Step-by-step explanation:
19x0.08 (that's 8% or 8/100) = $1.52
$19+$1.52= $20.52 :)