Answer:
Here you go
Step-by-step explanation:
The expression that show the amount of money that Marvin has after his purchase is 400 - (4d + 12r + 8c)
Amount with Martin = $40
Since he buys 4<em> dolls</em> for d dollars each, 12 <em>race cars</em> for r dollars each, and 8 coloring books for c dollars each, the total value will be:
= (4 × d) + (12 × r) + (8 × c)
= 4d + 12r + 8c
Therefore, the expression that show the amount of money that Marvin has after his purchase will be:
= 400 - (4d + 12r + 8c)
Read related link on:
brainly.com/question/24429956
Answer:
425 milliliters of compound A are needed
Step-by-step explanation:
We were told that 
milliliters of compound A and 
milliliters of compound B is needed to make the drug.
This means that each drug contains 11 milliliters of both compounds.
milliliters is the volume of each drug.
Therefore the chemist needed 
millilirteres of compound A.
Answer:
14
Step-by-step explanation:
2(l+b)
2(3+4)
2(7) now do multiply
answer 14m
