Factor the expression using the GCF

6r-30

6(r - 5)

Step-by-step explanation:

GCF here is 6. So divide each term by 6.

6r - 30 = 6(r - 5)

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

rounding to the nearest thousandth would be 452,000