Answer:
C: -2<x≤7
Step-by-step explanation:
- -2<x, as there is an open circle on -2
- x≤7 as there is a closed circle on 7
- Put them together, -2<x≤7
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)
1.25x2=2.50
2.50x2=5.00
Total-7.50
20.00-7.50=12.50
Answer:
136
Step-by-step explanation
multiply 4 by 31 and add 20