80x+30
-30x-30
=50x
You subtract 30 from each side
89.95 x 0.05 (5%)
=4.4975
The final cost of the DVD player is 89.95-4.4975
=85.4525
≈ $85.45
Am going to presume you want it solved.
Please pardon my presumption
7 - (2/3)x < x - 8, Take all the x to one side of the inequality
-(2/3)x-x < - 8 -7
-(5/3)x < - 15 Divide both sides by -5/3 and inequality sign changes
x > (-15)/(-5/3)
x > 15 * 3/5 . 5 into 15 is 3.
x > 3*3
x > 9
If you would like to solve for the positive value of x, you can do this using the following steps:
6 * x^2 - 54 = 0 /6
x^2 - 9 = 0
(x - 3) * (x + 3) = 0
1. x = 3
2. x = - 3
The correct result would be x = 3.
If u have to drive the car 60 miles per day, at 0.30 per mile, then u r spending
(60 x 0.30) = 18 per day on just driving.
plus the 26 per day for the rental
totals : 18 + 26 = 44 per day
44d = 350
d = 350/44
d = 7.95 rounds to 8 days
answer is 8 days
