Answer:
it depend
Step-by-step explanation:
i can edit this answer but-
do they mean that both objects together costs that much or does that mean that pens and pencils cost the same?
1. y = -3x +7
2. 4, 0
3. y = 5x
4. 5, -1
5. y = -9
6. 7, 0
41.2
1) 43
2) 61
3) 79
4)97
5)115