Please demonstrate steps.
Please see attached file for full problem description.

A.

The length of a rectangular swimming pool is 2x - 1 meters, and the width is x + 2 meters. Write a polynomial that represents the area. Find the area is x is 5 meters.

B.

Area of a parallelogram. Find the trinomial that represents the area of a parallelogram whose base is 3x + 2 meters and whose height is 2x + 3 meters.

C.

A lot was thought to be square, 157 ft by 157 ft. When surveyed one side was 2 feet longer and the other side was 2 feet shorter. How much less area is there than originally thought?

D.

P dollars is invested at annual interest rate r for 1 year. If the interest rate is compounded semiannually, then the polynomial represents the value of the investment after 1 year. Rewrite the expression without parentheses. Evaluate the polynomial if P = $200 and r = 10%.

E.

Perimeter of a rectangle
The perimeter of a rectangular yard is 6x + 6 yards. If the width is x yards, find the binomial that represents the length.

F.

Joe invested P dollars in a 2 year CD with an annual rate of return of r. After the CD rolled over 3 times, its value was . Which law of exponents can be used to simplify the expression? Simply the expression and show steps.

G.

Diameter of a circle
If the diameter of a circle is meters, then what is the radius?

I think this one would be but is does not seem correct.

I need to write 3 multi-step wordproblems with answers. One must use percentages, one must use exponents and the third can be any type. I have to include the process for solving each of the problems. The wordproblems don't have to be very difficult.

30. Assume that Joe take 6 hours working alone and Sam takes 8 hours working alone, how long does it take the, to do it together?
54. (1 +3i) (2-5i)
64. i(3-4i) (6+4i)
84. 14 + 5i divided by 3 +2i
94. 5 divided by 9i

The owner of a hobby store bought a case of 9-volt batteries for $26.00. He marked the price up such that his profit was $1.74 per battery. After selling 13 batteries, the store owner had recovered his cost. How many 9-volt batteries are in a case?

A stone is thrown into a lake, and t seconds after the splash the diameter of the circle of ripples is t meters
A. Express the circumference C of this circle as a function of t.
B. express the area A of this circle as a function of t.

Jenny purchased a prepaid phone card for $20. The long distance calls cost 10 cents a minute using this card. Jenny used her card only once to make a long distance phone call. If her remaining credit on the card is $18.90. How many minutes did her call last?

Debbie traveled by boat 5 miles upstream to fish in her favorite spot. Because of the 4 mph current, it took her 20 minutes longer to get there than to return. How fast will her boat go in still water?

An airplane travels 100 km/hr for 2 hrs in a direction of 210degrees. At the end of this time how far south of the airport is the airplane?
Directions are given in degrees clockwise from north
The airplane is -------------kilometers south of the airport after 2 hrs
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12) You have exactly $537 to spend on parting gifts for your rich uncle's birthday party. You decide to get watches for the ladies (at $27.98 each), and beepers for the men (at $23.46 each). You know that the number of watches required will be 3 times as much as the number of beepers. How many of each item do you buy?