Need these done by 40 minutes please help

3) x = 1.8, y = -7.2 4) x = -2, y = 1

Step-by-step explanation:

Question 3:

The two equations are both equal to y in question 3, meaning we can set them equal to each other:

Find y by plugging x into either equation:

Question 4:

Use substitution for question 4 by plugging the second equation into the first's y:

Find y by plugging x into either equation:

4 adults and 12 babies

step-by-step explanation:

4 x 7 = 28

12 x 15 = 180

180 + 28 =208

4 x 3 = 12

b) k’(6, 4); l’(3, 3)

step-by-step explanation:

a 270° clockwise rotation maps every point (x, y) to (y, -x). (it negates the x-coordinate and then switches it and the y-coordinate.)

this means the endpoints of the side congruent to kl, k' and l', would be mapped as:

k'(-4, 6)→(6, 4)

l'(-3, 3)→(3, 3)