Writing Equations

Question 1

The equation is . Which statement should Marta say that will communicate the correct equation? Select all that apply.

Revolt · Accepted Answer

Fifty more than half the number of the oranges is one-hundred-and-twenty.; The sum of fifty and half the number of oranges is the same as one-hundred-twenty.

Question 2

Marta told Maribel “The sum of fifty and half the number of oranges is the same as one-hundred-twenty.” Maribel wrote What is her error?

Revolt · Accepted Answer

The should be multiplied by m.

Question 3

Marta said is an equation, while Maribel argued that it is an expression. Determine who is correct and explain why.

Revolt · Accepted Answer

Marta is correct. This is an equation. The statement includes an equal sign. Equations include an equal sign, expressions do not include an equal sign.

Question 4

Marta’s fruit stand sold x oranges on Thursday and twice as many on Friday. All together, on both days, she sold 108. Which bar diagram represents the equation?

Revolt · Accepted Answer

Answer image: //media.edgenuity.com/EVresources/3107-08-01-20-04-task/mc001-1.jpg

Question 5

Marta’s fruit stand sold many oranges on Thursday and twice as many on Friday. All together, on both days, she sold 108. Which equation represents the problem?

Revolt · Accepted Answer

x + 2x = 108

Question 6

Marta’s customer bought 4 large oranges at $0.75 each and 8 small oranges at $0.50 each plus tax was a total of $7.49. She used t to represent the amount of tax. Explain her errors in the diagram.

Revolt · Accepted Answer

The total, 7.49, should be the top bar, and the variable, t, should be one of the partial bars. The prices for a certain number of oranges is also incorrect. $0.75 should be multiplied by 4 and $0.50 multiplied by 8.

Question 7

Maribel was working at the fruit stand and had to find how much change to give a customer. The customer bought 11 oranges at $0.65 each and paid with a $10 bill. Use c to represent the amount of change and choose the correct equation. 11(0.65) + c = 1011(0.65) = 10 + c-10 + c = 11(0.65)10(0.65) + c = 11

Revolt · Accepted Answer

11(0.65) + c = 10

Question 8

The weight of a mandarin orange is about 6 ounces. A basket that weighs 4 ounces will hold m mandarin oranges, the total weight is 70 ounces. Which equation represents the basket of oranges?

Revolt · Accepted Answer

4 + 6m = 70

Question 9

Explain the steps taken to write an equation from a description given in words.

Revolt · Accepted Answer

To write an equation from a description given in words, you first have to identify and define the variable. Then you would identify the coefficient, constants, and operations between the terms. Finally, you can translate to write the equation.

Writing Equations Answers

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