10 questions
500 different light bulbs were tested in each trial. The bar graph above shows the number of defective light bulbs found in each trial. In Trial B, what percent of the light bulbs were defective?
0.70%
0.84%
1.40%
7.00%
The graph of f(t) = ax2 +bx +c, the height of a golf ball hit after t seconds, is shown. The point P(2, 70) represents the height of a bird at a given point in time. Which of the following expressions correctly compares the height of the ball and the height of the bird at that point in time?
f(70) > 2
f(70) < 2
f(2) > 70
f(2) < 70
If 2y = x + 40 and 3x = y + 20, what is the value of x + y?
28
34
38
44
2.3
2.4
2.5
2.6
To the nearest tenth of a percent, what percent of states with a state-level sales tax do not have a state-level income tax?
13.3%
12.1%
14.4%
8.6%
a and b are constants. If the equation has no solution, which of the following statements must be true about a and b ?
a does not equal 3 and b does not equal 4
a = 3 and b does not equal -4
a = 3 and b = -4
a = 3 and b = 4
3
5
6
8
Based on the system of equations, what is the value of 5x + 5y?
500
3000
1500
2500
Which of the following is an equation of the line in the xy-plane?
x + y = -4
x - y = -4
x + y = 4
x - y = 4
In the figure above, point B lies on segment AD. What is the value of 3x?
18
36
54
72