I will mark you as brainliest:))

(A)

Step-by-step explanation:

To find the range, you have to subtract the highest value from the list (85) from the lowest value (15) When you subtract these values you get 70, which is the range.

To find the mid-range, you add the highest value from the list (85) and the lowest value (15) When you add these values, you get 100. You then have to divide the sum of the highest and lowest value (100) by 2. When you divide the sum of the highest and lowest value by 2 you get 50, which is the mid-range.

Hope this helps!

step-by-step explanation:

de-gf

hj=3x+20

ji=15x-64

step-by-step explanation: