Evaluate each expression if d = 8, e = 3, f =4 , and g = -1 1. 2 (d+)=9)

2. d/4

3. ef/4

4. 10 (e+7)

5. The expression 5n + 2 can be used to find the total cost in dollars of bowling where n is the number of games bowled and 2 represents the cost of shoe rental. How much will it cost Vincent to bowl 3 games?

Spiral Review

6. 7 (9 - 4) =

7. (9 + 2)6 =

8. 5(9 + 8) =

Solve each equation.

9. 5k + 6 = 16

10. 14n - 32 = 22

Work out these multiplications:

11. 5 x -4 =

12. -8 x 6 =

13. -4 x -5 =

14. -2 x 20 =

Work out these divisions:

15. 20 divided by -10 =

16. -30 divided by 6 =

17. -50 divided by -5 =

look a the sides they are perpendicular

idk

step-by-step explanation:

{x = -1/2 ,   y = -1

step-by-step explanation:

solve the following system:

{2 x + y = -2

{10 x - 3 y = -2

in the first equation, look to solve for y:

{2 x + y = -2

{10 x - 3 y = -2

subtract 2 x from both sides:

{y = -2 x - 2

{10 x - 3 y = -2

substitute y = -2 x - 2 into the second equation:

{y = -2 x - 2

{10 x - 3 (-2 x - 2) = -2

10 x - 3 (-2 x - 2) = (6 x + 6) + 10 x = 16 x + 6:

{y = -2 x - 2

{16 x + 6 = -2

in the second equation, look to solve for x:

{y = -2 x - 2

{16 x + 6 = -2

subtract 6 from both sides:

{y = -2 x - 2

{16 x = -8

divide both sides by 16:

{y = -2 x - 2

{x = -1/2

substitute x = -1/2 into the first equation:

{y = -1

{x = -1/2

collect results in alphabetical order:

answer:   {x = -1/2 ,   y = -1

table 3 represents a direct variation function. : )