7. 3x + 2y2 let x = 4, y = 3 8. (x + 2)2 - (3x - 2) - 4 Let x = 3

9. x + 2y - 3z + xyz let x = 4, y = 3, z = 2

10. xyz let x = 4, y = 2, z = 3

7. 24

8. -1

9. 28

10. 24

Step-by-step explanation:

substitute values into equations. don't forget the brackets :))

7. 3x + 2y2 Let x = 4, y = 3

= 3(4) + 2(3)2

= 12 + 12

= 24

8. (x + 2)2 - (3x - 2) - 4 Let x = 3

= ((3) + 2)2 - (3(3) - 2) - 4

= (5)2 - (9 - 2) - 4

= 10 - 9 + 2 - 4

= -1

9. x + 2y - 3z + xyz Let x = 4, y = 3, z = 2

= (4) + 2(3) - 3(2) + (4)(3)(2)

= 4 + 6 - 6 + 24

= 28

10. xyz Let x = 4, y = 2, z = 3

= (4)(2)(3)

= 24

c is the correct answer

step-by-step explanation:

all the angles opposite to the angle 150 would be 150 and all the angles that are next to 150 are 30 because they equal 180 it you add it up.

step-by-step explanation: