Question

Your gym membership costs $30 to join and $25 per month. Which equation gives the total cost, y, for a membership that lasts x months? 25x?30=y 25x+30=y 25x=30y 25+30x=y

Answer 1

25 + 30 = y

Explanation:

Answer 2

2.
`25x+30=y`

Explanation:

Let y be the total cost for gym membership.

It have been given that your gym membership costs $30 to join and $25 per month. This means that $30 is constant value of our equation and 25x will be the cost for a membership that will last for x days.

We can write an equation that gives the total cost for a membership of x days by equating y with sum of joining charges and cost of membership for x days :
`y=25x+30`

Now let check which of the given choices is correct.

1.
`25x?30=y`

In our first option sign between 25x and 30 is not clear, therefore, our first option is not correct.

2.
`25x+30=y`

Upon looking at our given choices we can see that expression represented by 2nd option is exactly same as our expression, therefore, 2nd option is the correct choice.

3.
`25x=30y`

We can see that constant value ($30) in being multiplied by total cost(y), therefore, our 3rd option is not a correct choice.

4.
`25+30x=y`

We can see that in this expression per month cost is changed with constant value, which means that cost for per month membership is $30 and joining charges are $25, therefore, 4th option is not a correct choice.