Does anybody get this I need help on distance formula

Step-by-step explanation:

1. The coordinates that come first are x1 and y1 and the coordinates that come in second are y1 and y2.

(5,8) =x1 and y1

(12,3)=x2 and y2.

2. You have to plug the coordinates back into the formula.

d=  (12-5) to the second +( 3-8)to the second

         7                                 -5

You do it to the second power

49+10=59

and add a square root.

If you still need help let me know.

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13

the answer is 48m^2!

step-by-step explanation: