Answer this for me, it's to confusing

Answers:

The equation is L = 2D+52

After 39 days, the total length of the road is 130 miles

How I got those answers:

D is the number of days

For each day, 2 miles is added on.

After 1 day, 2*1 = 2 miles is added on

After 2 day, 2*2 = 4 miles is added on

After 3 days, 2*3 = 6 miles is added on

After 4 days, 2*4 = 8 miles is added on

and so on...

In general, 2*D or 2D miles is added on after D number of days have passed by. For example, if 10 days pass by then 2*D = 2*10 = 20 new additional miles are added on.

The expression 2D is added onto the starting amount of 52

Overall the expression 2D+52 represents the total length of the road, which is L.

So L = 2D+52 is our equation

Once we have the equation, we plug in D = 39 and use the order of operation PEMDAS to simplify

L = 2*D + 52

L = 2*39 + 52

L = 78 + 52

L = 130

After 39 days, the total length of the road is 130 miles

yes. we do proportions in probabilities.

center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.