Question

Valentina is baking choco pies and choco cakes. Each pie takes two times the number of chocolate bars as each cake. She plans to make 4 pies and 3 cakes. She wrote down the expression 4(2x) + 3(x) to model her baking plans. What does this entire expression represent?

A.This expression represents the total number of chocolate bars used for all the pies.
B.This expression represents the total number of chocolate bars used for all the cakes.

 
C.This expression represents the total number of cakes and pies being made.  
D.This expression represents the total number of chocolate bars she will need for pies and cakes.

Answer 1

Let
`x` represent the number of chocolate bars Valentina will need to make the pies and cakes.

We know from our problem that she plans to make 4 pies and 3 cakes; we also know that each pie takes two times the number of chocolate bars. Lets translate this into an equation:
Chocolate bars needed=
`4(2x)+3(x)`
Chocolate bars needed=
`8x+3x`
Chocolate bars needed=
`11x`

She will need 11 chocolate bars for her pies and cakes.

We can conclude that the correct answer is: D.This expression represents the total number of chocolate bars she will need for pies and cakes.