Category 1 STAAR Algebra

A savings account balance can be modeled by the graph of the linear function shown on the grid. What is the rate of change of the balance with respect to the number of deposits?

• $100 per deposit

• $50 per deposit

• $0.50 per deposit

• $2 per deposit

Which expression is equivalent to 2x² + (4x - 6x²) + 9 - (6x + 3)?

• -4x² - 2x + 12

• -4x² - 2x + 6

• -10x + 6

• 18x +12

Baseball fans can buy tickets for seats in the lower deck or upper deck of the stadium. Tickets for the lower deck cost $42 each. Ticket prices for the upper deck are 75% of the cost of tickets for the lower deck. Which inequality represents all possible combinations of x, the number of tickets for the lower deck, and y, the number of tickets for the upper deck, that someone can buy for no more than $800?

• 42x + 56y ≤ 800

• 42x + 31.5y ≤ 800

• 42x + 56y > 800

• 42x + 31.5y > 800

Function p is in the form y =ax² + c. If the values of a and c are both less than 0, which graph could represent p?

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The table represents some points on the graph of a linear function. Which function represents the same relationship?

• h(x) = -3x - 10.5

• h(x) = -x - 3.5

• h(x) = 3x - 10.5

• h(x) = x - 3.5

Which expression is equivalent to 2x² + 7x + 4 ?

• (2x - 1)(x + 4)

• (2x + 1)(x - 4)

• (2x + 1)(x + 4)

• None of these

The graph of 0.5x - 2y = 3 is shown on the grid. Which ordered pair is in the solution set of 0.5x - 2y ≥ 3?

• (-2, 0.5)

• (2, 1)

• (2, -1)

• (-2, -0.5)

What value of x makes the equation

-5x - (-7 - 4x) = -2(3x - 4) true?

• x = 3

• x = 5

• x = ¹/₃

• x = ¹/₅

The starting annual salary for an office worker at a company is $29,000. If the company awards an annual increase of 6.2%, which graph models this situation after the office worker receives x annual increases?

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Which expression is equivalent to the expression above?

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