A) (2x + 1)(2x2 + 2x – 1)
B) (2x + 1)(4x3 + 2x – 1)
C) (2x + 1)(4x2 – 2x + 1)
D) (2x + 1)(2x2 – 2x + 1)
Part B: which company would charge less for cleaning 8 windows? Justify your answer.
Part C: How much money is saved by using the services of Company B instead of Company A to clean 6 windows?
B. One of the equations may easily be solved for a variable.
C. An exact solution is needed.
D. Both of the equations are solved for one variable.
Each chair or table requires between 0.2 and 1 gallon of paint to be painted.
What is the equivalent expression?
Equivalentexpressions are expressions that work the same even though they look different. If two algebraic expressions are equivalent, then the two expressions have the same value when we plug in the same value for the variable.
To find out how many gallons of paint are used to paint each piece of furniture, we need to divide the total amount of paint used by the total number of pieces of furniture.
Let x be the amount of paint used to paint one chair or table, in gallons.
Then, for 20 chairs and 5 small tables, the total amount of paint used is:
4 gallons = 20x + 5x
Simplifying this equation, we get:
4 gallons = 25x
Dividing both sides by 25, we get:
x = 0.16 gallons
Therefore, it takes 0.16 gallons of paint to paint each chair or table. Since we are looking for whole numbers, we can round this to the nearest whole number to get:
0.16 gallons ≈ 0.2 gallons
Hence, each chair or table requires between 0.2 and 1 gallon of paint to be painted.
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