Equations and Inequalities STAAR Algebra

A customer paid a total of $6.00 for 68 copies at a print shop. Some of the copies were black and white and the rest were color copies.

·        Each black and white copy cost $0.08.

·        Each color copy cost $0.015

Which system of equations can be used to find b, the number of black and white copies, and c, the number of color copies that the customer paid for at the print shop?

• b + c = 6.00

  0.08b + 0.15c = 68

• b + c = 68

  0.15b + 0.08c = 6.00

• b + c = 6.00

  0.15b + 0.08c = 68

• b + c = 68

  0.08b + 0.15c = 6.00

Which statement best represents the equation of the line shown on the grid and its relationship to the x-axis?      

• The equation of the line is x = 2.5 , and the line is parallel to the x-axis.

• The equation of the line is x = 2.5 , and the line is perpendicular to the x-axis

• The equation of the line is y = 2.5 , and the line is parallel to the x-axis.

• The equation of the line is y = 2.5 , and the line is perpendicu;ar to the x-axis.

Quadratic function h can be used to model the height in feet of a rocket from the ground t seconds after it was launched. The graph of the function is shown.

Linear function t has an x-intercept of -1 and a y-intercept of 5. Which graph best represents t?                                 

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Create a standard form equation by starting with Ax + By = C. Make sure to look at what x and y represent in this real-world problem. Plug in the numbers that represent x and y into the A and B. Also, the inequality symbol will come from the keyword AT MOST.

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AI.9.2.H

Create a standard form equation by starting with Ax + By = C. Make sure to look at what x and y represent in this real-world problem. Plug in the numbers that represent x and y into the A and B. Also, the inequality symbol will come from the keyword DOES NOT WANT TO SPEND MORE THAN.

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AI.9.2.H

Since they are asking you to create a system of equations, it helps to separate the problem into two equations that focus on WHAT they are talking about and THE COST of what they are talking about. Make sure the numbers make sense with the variables and the total. Call me for help if you don't understand.

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AI.9.2.I

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AI.9.3.D

There are two ways to solve this problem, first you can draw railroad tracks and solve for x.

OR

Turn the inequality symbol into an equal sign and then use MENU 3,1 to find the value of x.

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AI.9.5.B

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AI.9.5.C