Answer: -1t + 720
Step-by-step explanation:
He worked at both jobs for 90 hours for this month.
He worked t hours as a tutor which means that as a waiter he worked;
= 90 - t hours
The amount earned is therefore;
= 7t + (8 * (90 - t))
= 7t + 720 - 8t
= -1t + 720
Simplify 9 - 7x - 7x to 2 - 14x
2 - 14x = 4
Subtract 2 from both sides
-14x = 4 - 2
Simplify 4 - 2 to 2
-14x = 2
Divide both sides by -14
x = -2/14
Simplify 2/14 to 1/7
x = -1/7
Answer:
3^10-r
Step-by-step explanation:
You can use the quadratic formula:
X = (-b +/- ✓b^2 - 4ac)/2a
You then can get:
X = 2 or 1.5
Hope this helps! :)
