Answer:
70x + 5y = 805
Step-by-step explanation:
Textbooks = X
Notebooks = Y
35x100 hours = $3500+$65= $3565 for 100 hours of work and materials.
Answer:
Step-by-step explanation:
True
Answer:
40 black ink cartridges and 19 colored ink cartridges
Step-by-step explanation:
Let
represent the number of black printer ink cartridges sold. Let
represent the number of color printer ink cartridges sold.
Set up a system of equations:


Substitute:


⇒ 40 black ink cartridges, 19 colored ink cartridges (ans)