What is the volume of a rectangular solid whose length is 10 in., width is 8 in, and height is 4 in. ?

Answer: Before you answer the problem you need to know the formula. The formula for volume of a rectangular solid is V = length x width x height.

10 in. x 8 in. x 4 in. = 320 cubic inches

GED Math: Integers

Simplify the following:

-9 + 3x + 7 + (-x) + 5 +7x =

Solution: 7 + 9x

GED Math: Geometry

Susan is planning to replace the carpet in her living room. Her living room measures 15ft long and 10 feet wide. How many square feet of carpet will she need? Also, at $3.99 a square foot, how much will it cost her?

Solution: Use the formula Area = length x width. 15ft x 10 ft = 150 square feet. At $3.99 per square foot, it will cost Susan $598.50.

GED Math Algebra: Solving Equations

Solve the following equation when x = -3

x^2 + 10 - 3x + 2x =

Solution: 9 +10 - (-9) + (-6) = 22

GED Math Algebra: Evaluating equations

Evaluate the following when y = 6 and x = 2

6 - y + 3(2 + x) =

Solution: 6 - 6 + 3(2+2) = 12

Mrs. Smith is serving punch at her daugher's graduation party. She is planning on having 75 people attend and was told that she should average 16 oz. of punch per person. How much punch should she make?

Solution: 75 x 16 = 1200 ounces of punch; 1200 ÷ 128 (128 ounces in a gallon) = 9 gallons, 1 quart, 1 pint

Simplify the following:

(y^2)( y^3) =

Solution: (y · y)(y · y · y) = y^5

Susan went to the clothing store and bought a sweater. The sweater was originally priced at $50. What would the cost of the sweater be at 25% off and 5.5% sales tax?

Step one: Find the cost of the sweater. $50 x .75 = $37.50

Step two: Find the sales tax. $37.50 x 0.055 = $2.06

Step three: Add the cost of the sweater and sales tax together. $ 37.50 + $2.06 = $39.56

Simplify the following:

(7 + 6)(-3 + 9) - 3(2)=

Answer: 72

Evaluate the following when x= 7 and y=5.

3(x - y) + 17 =

Answer: 23

What is.....

-9 + 10 -(-5) +5 - (6)

Answer: 5