Step-by-step explanation:
step one: *multiply the negative 9 with the 5j.
which which will come out to be -45j
step 2: now now multiply the -9 with the k. which it comes out to be negative 9k.
step 3: -45j + -9k
Answer:
Look in the file, I've drew it there!
Answer:
9. 21
10. 70
11. 64
12. 31
13. 85
14. 31
double check the answer, i didnt use a calculator so might be wrong