Scores on a test have a mean of 70 and q3is 83. the scores have a distribution that is approximately normal. find p90

Ok,

The total is 64$:

= 64

It shows us one of the numbers for the equation, 13

+ 12 = 63

Two passes together plus the thirteen equals the total of 63$

the price of the pass is unknown, so we can use a variable to figure it out:

2x + 12 = 64

Now we solve

First subtract 12 from both sides:

2x + 12 - 12 = 64 - 12

Then divide both sides by 2:

2x ÷ 2 = 52 ÷ 2

And now we have our

x = 26