The table shows data from a local landscaper, estimating the area of flower gardens (x) in square feet, and the dollar cost to install them (y). When using the median-fit method with summary points (10, 120), (15, 150), and (25, 200), what is the equation of the best-fit model?

y = 5.33x + 67.78
y = 5.94x + 70.00
y = 6.00x + 56.67
y = 6.00x + 60.00

x y
5 75
10 120
12 130
14 140
15 150
18 160
20 175
25 200
30 240

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

The answer is 60.9774