Answer:
2k
Step-by-step explanation:
3k and -k are both like terms, so you can combine them. Adding opposite signs works in the same way as subtraction, so you can rewrite the expression as 3k-k, which is 2k.
commision = 7% of $9000
commision = 7/100 * $9000
commision = $630
6
a
3000,
5 or above round up, 4 and below keep it the same