Answer:
Britney earn last week $809.25 .
Step-by-step explanation:
As given
itney sells mattresses at a furniture store.
She makes a 9.75% commission on each mattress she sells.
Britney sold four mattresses.
9.75% is written in the decimal form.
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= 0.0975
Now find out the commission of first mattresses.
Mattresses cost = $2400
Commission on first mattresses = 0.0975 × 2400
=$234
Now find out the commission of second mattresses.
Mattresses cost = $3200
Commission on second mattresses = 0.0975 × 3200
=$312
Now find out the commission of third mattresses.
Mattresses cost = $1900
Commission on third mattresses = 0.0975 × 1900
=$185.25
Now find out the commission of fourth mattresses.
Mattresses cost = $800
Commission on fourth mattresses = 0.0975 × 800
=$78
Thus
Total Commission = Commission on first mattresses + Commission on second mattresses + Commission on third mattresses + Commission on fourth mattresses
Put value in the above
Total Commission = $234 +$312 + $185.25 + $78
=$809.25
Therefore the Britney earn last week $809.25 .
