Question

Which of these equations, when solved, gives a different value of x than the other three? 9.1 = -0.2x + 10 10 = 9.1 + 0.2x 10 – 0.2x = 9.1 9.1 – 10 = 0.2x To prepare for his mountain biking trip, Rhyan bought four tire patches. Rhyan paid using a gift card that had $22.20 on it. After the sale, Rhyan's gift card had $1.90 remaining. Which equations could you use to find the price of one tire patch? Select all that apply. 4x – 1.9 = 22.2 4x – 22.2 = 1.9 4x + 1.9 = 22.2 4x + 22.2 = –1.9 22.2 – 4x = 1.9

Answer 1

c and e the last and second to last one

Explanation:

Answer 2

Given:

Different equations are given.

Rhyan paid using a gift card that had $22.20 on it. After the sale, Rhyan's gift card had $1.90 remaining.

To find:

The equation which gives a different value of x than the other three.

To find the equations that could you use to find the price of one tire patch.

Solution:

In option A,

`9.1 = -0.2x + 10`

`0.2x= 10-9.1`

`0.2x= 0.9`

Divide both sides by 0.2.

`x=(0.9)/(0.2)`

`x=4.5`

Similarly,

In option B,

`10 = 9.1 + 0.2x`

`0.9= 0.2x`

`4.5=x`

In option C,

`10-0.2x = 9.1`

`-0.2x = -0.9`

`x = 4.5`

In option D,

`9.1 – 10 = 0.2x`

`-0.9 = 0.2x`

`-4.5 = x`

Since option D has difference solution, therefore the correct option is D.

Let price of one tire patch be x.

So, price of 4 tire patches = 4x

Remaining amount in Rhyan's gift card = $1.90

Total amount = $22.20

Price of 4 tire patches + Remaining amount in gift card = Total amount

`4x+1.9=22.2`

It can be written as

`4x-22.2=-1.9,1.9=22.2-4x,22.2-4x=1.9`

Therefore, the correct options are C and E.