mary robertson sells tires at a large car service center. she earns 10% commission on the first $1,000, 15% on the nest $2,000, and 20% on sales of more than $3,000. last week she sold $3,400 worth of tires. what was her total commission?

i am sary if im wong i think its still 20%

100 + 300 + 450 + 680

Step-by-step explanation:

because  it says 20% on sales of more than $3,000 and last week she sold $3,400

$1,000 × 10% + $2,000 × 15% + $3,000 × 20% + $3,400 × 20% =

$1530

please dont be mad if im wong i haven't did this kind of math in awhile.

hope this helps

each side has a different length.  

step-by-step explanation: