Question

Alexandra keeps a record of her fixed and total expenses each month. Last month, she spent a little more than usual on variable expenses.

fixed expenses: $1,832.76
total expenses: $4,295.82

Which equation represents Alexandria’s variable expenses for last month?

A.
v = $4,295.82 − $1,832.76
B.
v = $1,832.76 − $4,295.82
C.
v = $1,832.76 + $4,295.82
D.
v = $2,463.06 + $1,832.76
E.
v = $4,295.82 − $2,463.06

Answer 1

Explanation:

A.

v = $4,295.82 − $1,832.76

Answer 2

A

Explanation:

Assume Alexandra has already recorded 2 months.

First month:

Fix: 1832.76

total: 1832.76

Last month:

Fix:1832.76

total: 4295.82

Therefore, variable expense of last month is

4295.82-3665.52, oh no! we don't have the answer.

This contradict with our assume.

Assume Alexandra has already recorded 1 month.

Last month:

Fix:1832.76

total:4295.82

Variable = 4295.82 - 1832.76 = A