Question

Kris joined a gym. She paid $2 each time she went to the gym. She also paid a fee for a locker key each time she went to the gym. Kris went to the gym 21 times last month and paid a total of $52.50. The equation 21(x + 2) = 52.50 can be used to find x, the cost for a locker key. What is the first step in solving the equation to find x, the cost for a locker key?

A. Add 2 to both sides.
B. Divide both sides by 21.
C. Multiply both sides by 21.
D. Subtract 2 from both sides.

Answer 1

b 100%

Explanation:

i took the test on time4learning and got a 100

Answer 2

B. Divide both sides by 21.

Explanation:

We have been given that Kris joined a gym. She paid $2 each time she went to the gym.

Kris also paid a fee for a locker key each time she went to the gym. Kris went to the gym 21 times last month and paid a total of $52.50.

The equation
`21(x+2)=52.50` can be used to find x, the cost for a locker key.

Let us solve our given equation. To solve our given equation we will divide both sides of equation by 21.

`(21(x+2))/(21)=(52.50)/(21)`

`x+2=2.5`

Therefore, the 1st step in solving our given equation to find x, will be divide both sides of equation by 21 and option B is the correct choice.