Which of the following is the amplitude of the function shown in the following graph?
(A) 0.5
(B) 1
(C) π
(D) 2π
(E) 4π
Which of the following expressions is equivalent to the inequality 6x – 8 > 8x + 14?
（A）x < --11 （B） x > --11 （C） x < --3 （D） x > --3 （E） x < 11
Correct Answer: A
A square and a regular pentagon (a 5-sided polygon with congruent sides and interior angles) have the same perimeter. One side of the pentagon measures 20 inches. How many inches long is one side of the square?
（A）4 （B） 16 （C） 25 （D） 36 （E） 100
Correct Answer: C
The stem-and-leaf plot below shows the scores for each golfer in a recent tournament at the Lehigh Valley Golf Club. There were 13 golfers participating in the tournament.
(Note: For example, a score of 72 would have a stem value of 7 and a leaf value of 2.) If a score represented in the stem-and-leaf plot is selected randomly, what is the probability that the score selected is exactly 83?
（A）
（B） 
（C） 
（D） 
（E） 
Correct Answer: A
More ACT Math Exam Questions
- 1
When asked the price, in dollars, of his fancy calculator, Albert responded, "If you take the square root of the price, then add
the price, the result is 66." What is the price, in dollars, of Albert's calculator? - 2A certain watch costs $100, and a certain pearl necklace costs $300. If the cost of the watch increases by 5% and the cost of the pearl necklace decreases by 10%, what will be the sum of their new costs?
- 3If xy = 144, x + y = 30, and x > y, what is the value of x – y ?
- 4
Which of the following represents the product of the matrices below?
- 5
In the qualifying rounds for a race, Rusty and Dale drive their cars around a 6,000-foot oval track. Rusty and Dale each drive 8 laps in the qualifying rounds in lanes of identical length.
In the qualifying rounds, Rusty averages 180 seconds per lap until he begins the last lap. He then goes into a lower gear. He averages 190 seconds per lap for this qualifying round. How many seconds does Rusty take to drive the final lap?