15 I think i'm sorry if i'm wrong
Answer:
see below
Step-by-step explanation:
Add 4 to find the solution:
z ≤ 7
The value 7 is included in the solution set, so there will be a solid dot at that point. Numbers less than 7 are also included in the solution set, so the number line will be shaded to the left of that solid dot.
750/14=53.57
53.57 gallons per minute
Answer:
They are 7 and 11. 11 + 7 = 18, 11 - 7 = 4.