We are asked to evaluate four expressions, given that $y = 8$ and $d = 4$. The expressions are: 17. $\frac{6y}{d}$ 18. $\frac{20}{d} + y$ 19. $\frac{yd}{2}$ 20. $\frac{y}{d} + 6$

1. Problem Description

We are asked to evaluate four expressions, given that $y = 8$ and $d = 4$. The expressions are:

1

7. $\frac{6y}{d}$

1

8. $\frac{20}{d} + y$

1

9. $\frac{yd}{2}$

2

0. $\frac{y}{d} + 6$

2. Solution Steps

1

7. $\frac{6y}{d}$

Substitute $y = 8$ and $d = 4$:

$\frac{6(8)}{4} = \frac{48}{4} = 12$

1

8. $\frac{20}{d} + y$

Substitute $d = 4$ and $y = 8$:

$\frac{20}{4} + 8 = 5 + 8 = 13$

1

9. $\frac{yd}{2}$

Substitute $y = 8$ and $d = 4$:

$\frac{(8)(4)}{2} = \frac{32}{2} = 16$

2

0. $\frac{y}{d} + 6$

Substitute $y = 8$ and $d = 4$:

$\frac{8}{4} + 6 = 2 + 6 = 8$

3. Final Answer

1

7. 12

1

8. 13

1

9. 16

2

0. 8