Rin spends $20 every week on drum lessons.

The two variables are:

d = total amount of dollars Rin spends

w = number of weeks

Which statements are correct? Select all that apply.

The independent variable causes a change in the

dependent variable.

The equation is d = 20w.

The equation is w = 20d.

D As the number of weeks increases, the total dollars

Rin spends increases.

As the number of weeks increases, the total dollars

Rin spends decreases.

1213

weeks

(w)

dollars

(d)

20

40

60

80

A, B, D and F.

Step-by-step explanation:

Rin spends $20 every week on drum lessons.

If:

d = total amount of dollars Rin spends

w = number of weeks

Then: d=20w

w is the independent variable while d is the dependent variable. A change in w will lead to a change in d. Therefore:

(A) The independent variable causes a change in the dependent variable.

(B) The equation is d = 20w.

From the equation: d=20w

When w=1, d=$20

When w=2, d=$40

When w=3, d=$60

When w=4, d=$80

This tallys with the values in Option F.

Therefore:

(D) As the number of weeks increases, the total dollars Rin spends increases.

The correct options are: A, B, D and F.