SAT Follow Up 1

John runs at different speeds as part of his training program. The graph shows his target heart rate at different times during his workout. On which interval is the target heart rate strictly increasing then strictly decreasing?

• Between 0 and 30 minutes

• Between 40 and 60 minutes

• Between 50 and 65 minutes

• Between 70 and 90 minutes

If  $y=kx$  ,where k is a constant, and  $y=24$  when  $x=6$    , what is the value of  $y$   when  $x=5$  

• 6

• 15

• 20

• 23

In the figure above, lines  $l$   and  $m$   are parallel and lines  $s$   and  $t$   are parallel. If the measure of  $\angle_1$  is 35°, what is the measure of  $\angle_2$  ? 

• 135°

• 55°

• 115°

• 145°

If  $16+4x$ is 10 more than 14, what is the value of  $8x$  ? 

• 2

• 6

• 16

• 80

Which of the following graphs best shows a strong negative association between d and t?

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• 
• 
• 

A hospital stores one type of medicine in 2-decagram containers. Based on the information given in the box above,how many 1-milligram doses are there in one 2-decagram container?

• 0.002

• 200

• 2,000

• 20,000

The number of roof tops with solar panel installations in 5 cities is shown in the graph above. If the total number of installations is 27,500, what is an appropriate label for the vertical axis of the graph?

• Number of installations (in tens)

• Number of installations (in hundreds)

• Number of installations (in thousands)

• Number of installations (in tens of thousands)

For what value of  $n$   is  $\left|n-1\right|+1=0$  

• 0

• 1

• 2

• There is no such value of n.

The speed of a sound wave in air depends on the air temperature. The formula  $a\ =1,052+1.08\ t$   shows the relationship between a, the speed of a sound wave, in feet per second, and t, the air temperature, in degrees Fahrenheit (°F).

Which of the following expresses the air temperature in terms of the speed of a sound wave?

•  $t=\frac{a-1,052}{1.08}$  

•  $t=\frac{a+1,052}{1.08}$  

•  $t=\frac{1,052-a}{1.08}$  

•  $t=\frac{1.08}{a+1,052}$  

The speed of a sound wave in air depends on the air temperature. The formula  $a=1,052+1.08t$ shows the relationship between a, the speed of a sound wave, in feet per second, and t, the air temperature, in degrees Fahrenheit (°F).
At which of the following air temperatures will the speed of a sound wave be closest to 1,000 feet per second?

• -46°F

• -48°F

• -49°F

• -50°F