STAAR Alg 1 #31-40

Which situation best shows causation?

• The length of a rectangle affects the width of the rectangle.

• The amount of time a cell phone is used affects the charge of its battery.

• The number of ice-cream bars sold affects the number of milkshakes sold.

• The number of soccerballs a team owns affects the number of games the team wins during the soccer season.

Which graph best represents a function with a domain of all real numbers less than or equal to 6?

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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. What is the maximum value of the graph of the function?

A contractor’s total earnings from a job include a fixed amount plus an amount based on the number of hours worked. The values in the table represent the linear relationship between the number of hours worked and the contractor’s total earnings in dollars. What is the rate of change of the contractor’s total earnings in dollars with respect to the number of hours worked?

• $8.75 per hour worked

• $9.25 per hour worked

• $10.00 per hour worked

• $20.00 per hour worked

• {−5, −1.5}

• {2.5, 3}

• {1.5, 5}

• {−3, −2.5}

The table represents some points on the graph of an exponential function.

Which function represents this relationship?

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 perpendicular to the x-axis.