The instructor wants the profit to be positive, so
f(n) > 0
70n -400 > 0
n - 400/70 > 0
n > 5 5/7
The instructor must enroll at least 6 students to make a profit.
Answer:
Jenny uses 7⁄12 of the tank of gas.
Step-by-step explanation:
Answer: There are no solutions.
Step-by-step explanation: x - 5/3 = x - 3/5
x + -5/3 = x + -3/5
x + -5/3 - x = x + -3/5 - x
-5/3 = -3/5
-5/3 + 5/3 = -3/5 + 5/3
0 = 16/15
Answer:
<u><em>54.86 or 55, rounded to a whole number</em></u>
Step-by-step explanation:
(128*3) = 384
384/7 = 54.86
This is not a whole number