Jonathan goes to the store and purchases 3 pencils for $0.28

OR

Step-by-step explanation:

Given : Jonathan goes to the store and purchases 3 pencils for $0.28 each, and y number of erasers for $0.38 each.

No. of pencils bough = 3

Rate of each pencil  = $0.28

Then , Money( in dollars) spent on pencils = No. of pencils x rate of each pencil.

Also, No. of erasers = y

Rate of each eraser = $0.38

Then , Money(  in dollars) spent on erasers = No. of erasers x rate of each pencil.

Then , the expression that shows how much Jonathan spent ( in dollars)=

Money spent on pencils+Money spent on erasers

= 3(0.28)+0.38 y

= 0.84+0.38y

Hence , the required expression : OR

3(.28) + e(.38) = total amount

Keywords

linear equation, variables

Step 1

Define the variables

Let

x> number of erasers

y> total cost

we know that

 > this is the linear equation that represent the situation

therefore

the answer is y = 0.84 + (0.38)x

Keywords

linear equation, variables

Step 1

Define the variables

Let

x-----> number of erasers

y-----> total cost

we know that

 ------> this is the linear equation that represent the situation

therefore

the answer is

The expression 1.22y is the amount spent by Jonathan.

Step-by-step explanation:

∴ The total cost of 3 pencils = 0.283 = $0.84

∴ The total cost of y erasers = 0.38y = $0.38y

Jonathan spent = Total cost of pencil + total cost of eraser

⇒ 0.84 + 0.38y

⇒ 1.22y