This is my work are the answers correct and if I’m not please correct me. 7.50 This represents basically their money and time

8.Y=90x+50

9.75

10.260 looking at the problem, I simply went back to number nine, saw how long they stayed and how much they spent and divided it and got 6.25. I then saw how much they spent overall on this problem divided 1625 by 6.25 and got 260 nights

11.75

12.600

13.Y=2/3x+600

14 looking at the problem it would take 72 months because every three months the tree grows two inches so 30x 2 +12=72

15.690 in

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.

solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system

no

step-by-step explanation:

is there more to this question?