Staar Review: Transversals, Angles, MAD

A gas company charges a $16 monthly fee and 0.6924 per hundred cubic feet of natural gas used during a month. Which equation best represents y, the gas company's monthly charges in dollars for using x hundred cubic feet of natural gas?

• y = 0.6924x + 16

• y = 16x + 0.6924

• y = 16x - 0.6924

• y = 0.6924x + 16

The tables show the ordered pairs that represent the vertices of Triangle 1 and its image, Triangle 2, after a dilation with the origin as the center of dilation. Which rule best represents the dilation that was applied to Triangle 1 to create Triangle 2?

• (x, y) → (0.2x, 0.2y)

• (x, y) → (5x, 5y)

• (x, y) → (8x, 8y)

• (x, y) → (10x, 10y)

After x hours of rainfall today, Yvette recorded the amount of rain in inches, y, in a rain gauge. The table shows the linear relationship for the recorded rainfall. How many inches of rain was in the gauge before the rain began today, and what was the rate at which the rain fell in inches per hour?

• There was 0 inches in the rain gauge before the rain began, and the rain fell at a rate of 1.25 inches per hour.

• There was 2.5 inches in the rain gauge before the rain began, and the rain fell at a rate of 1.25 inches per hour.

• There was 3 inches in the rain gauge before the rain began, and the rain fell at a rate of 0.75 inch per hour.

• There was 1.5 inches in the rain gauge before the rain began, and the rain fell at a rate of 0.75 inch per hour.

Which equation does NOT show a proportional relationship between x and y?

• y = x/12

• y = -15x

• y = 3x/8

• y = 7x - 9

What is the volume of the cylinder below?

• 58.8 ft³

• 554.17 ft³

• 2216.71 ft³

The volume of salt water on Earth's surface is approximately 350,000,000,000,000,000,000 gallons. How is this number written in scientific notation?

What is the value of angle “x”?

• x = 113°
• x = 67°

• x = 180°

The scatterplot of a data set is shown below. Which statement is best supported by the scatterplot?

• The is a non-linear association with speed and temperature.

• The is a negative linear association with speed and temperature.

• The is a positive linear association with speed and temperature.

• The is no apparent association between speed and temperature.

Maren made an initial deposit into her savings account. Each month Maren deposits the same amount into the savings account. The graph shows the linear relationship between x, the number of months Maren’s savings account has been open, and y, the amount of money in the account. What amount best represents Maren’s initial deposit?

• $450

• $900

• $1350

• $1575

What is the mean absolute deviation for the following data? 32, 43, 38, 51, 28

• 34.4

• 6.88

• 38.4

• 7.68