Compound Inequality, Selling Price Range, and Retirement pay

See the attached file.
Solve each compound inequality and write the solution set using interval notation.
80)
0< 5-2x <=10
-6< 4-x<0

81)

-3 < (3x -1)/ 5 < ½
1/3 < (3-2x)/6 < 9/2

86) Selling Price Range: Renee wants to sell her car through a broker who charges a commission of 10% of the selling price. The book value of the car is $14,900 but Renee still owes $13,104 on it. Although the car is in fair condition, and will not sell for more than the book value Renee must get enough to at least pay off the loan. What is the range of selling price?

54 ) Retirement pay: The annual Social Security benefit of a retiree depends on the age at the time of retirement. The accompanying graph gives the annual benefit for persons retiring at ages 62 through 70 in the year 2005 or later.
What is the annual benefit for a person who retires at the age of 64?
At what retirement age does a person receive an annual benefit of $11,600?
Find the slope of each line segment on the graph and interpret your results.
Why do people who postpone retirement until 70years of age get the highest benefit?

Ronald wants to sell his car through a broker who charges a commission of 10% of the sellingprice. Ronald still owes $11,025 on the car. Ronald must get enough to at least pay off the loan. What is the range of the sellingprice?

Need assistance in solving this problem using inequality:
Joe wants to sell his car through a broker who charges a commission of 10% of the sellingprice. Joe still owes $11,025 on the car. Joe must get enough to at least pay off the loan. What is the range of the sellingprice?

I need to graph the solution set to each compound inequality.
1. x > - 2 and x < 4 (Please note that this symbol < is underlined) sorry I don't know how to do the underlining.
I need to graph each compound inequality for this problem
2. 3 - x < y + 2 or x> y + 5

The zero factor property:
A) p^2 - p = 42
B) 16x - x^3 = 0
C) (x + 2)(x + 3) = 20
Solve each equation for y. Assume a and b are positive numbers:
D) y^2 + ay + by + ab = 0
Applications:
E) Tennis court dimensions. In singles competition, each player plays on a rectangular area of 117 square yards.

My boyfriend and I go out for dinner and the bill comes to $86.00. I usually tip more than 15% and my boyfriend usually tips at most 22% of the bill. How would I write a compound inequality that bests represents the range for a tip (d) that the server should expect to see.

(1) Does x = -5 satisfy the following compound inequality?
4 > -2(x+8) >= -6 AND 4 < 3x + 10 < 19
(2) Simplify the following compound inequality and express the result using interval notation:
7 < 3(x+2) + 10 < 25 AND 8 > 10 - 2x > 0
(3) Solve for x:
| x - 1/4 | =

Please see attached file for full problem description.
Solve system by the substitution method.
1. y = 2x - 6
y = x - 5
2. 7x - 4y = 26
y = x - 5
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Solve each system by the addition method. If there is no solution or an