ACT Math Practice Test 28 - Luyện thi ACT Toán online
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Bộ sưu tập: Tuyển Tập Bộ Đề Thi Đại Học Hoa Kỳ (ACT) - Có Đáp Án Chi Tiết
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A formula used to compute the current value of an investment account is A = P(1 + r)n, where A is the current value, P is the amount deposited, r is the rate of interest for 1 compounding period, expressed as a decimal, and n is the number of compounding periods. Which of the following is closest to the value of an investment account after 3 years if $8,000 is deposited at 5% annual interest compounded annually?
$8,400
$9,261
$15,730
$25,200
$33,463
Cube X has an edge length of 2 inches. Cube Y has an edge length triple that of Cube X. What is the volume, in cubic inches, of Cube Y?
6
12
36
72
216
What is the area of a circle that has a circumference of .5π?
0.0625π
0.10π
0.25π
25π
625π
Casey has buckets of 3 different sizes. The total capacity of 12 of the buckets is g gallons, the total capacity of 8 buckets of another size is g gallons, and the total capacity of 4 buckets of the third size is also g gallons. In terms of g when g>0, what is the capacity, in gallons, of each of the smallest-sized buckets?
g⁄8
g⁄4
12g
8g
If , then y =?
1
11
22
36
In the figure shown below, the perimeter of the triangle is 15 + 5√3. What is the value of x?
2
3
4
5
6
The fixed costs of printing a certain textbook are $900.00 per week. The variable costs are $1.50 per textbook. Which of the following expressions can be used to model the cost of printing t textbooks in 1 week?
$901.50t
$150t−$900.00
$900.00t+$1.50
$900.00−$1.50t
$900.00 + $1.50t
In the square graphed below, what is the slope of line segment AC?
4
2
1
−1
−4
What values of a are solutions for a2 + 2a = 8?
6 and 8
0 and 2
−2 and 4
−2 and 0
−4 and 2
For all x > 0, the expression equals:
x−6
x3
x6
x12
x2
If there are 6 × 1014 oxygen molecules in a volume of 3 × 107 cubic meters, what is the average number of oxygen molecules per cubic meter?
2 ×105
2 ×107
2 ×1021
18 ×107
18 ×1021
Which of the following statements is NOT true about the arithmetic sequence 16, 11, 6, 1, …?
The fifth term is −4.
The sum of the first 5 terms is 30.
The seventh term is −12.
The common difference of consecutive integers is −5.
The sum of the first 7 terms is 7.
For right triangle XYZ below, what is cos ∠Z?
4⁄3
5⁄4
3⁄4
3⁄5
Cannot be determined from the given information
In the xy-coordinate system, (√5,s) is one of the points of intersection of the graphs y = 2x2 + 6 and y = −4x2 + m, where m is a constant. What is the value of m?
30
33
36
39
42
Which of the following is equivalent to the inequality 3x − 6 > 6x + 9?
x > −5
x < −5
x > −2
x < 3
x > 3
(4x4)4 is equivalent to:
x
16x8
16x16
256x8
256x16
In the triangles shown below, what is the average of angles a, b, c, d, and e?
30°
45°
54°
60°
72°
The table below shows the total number of touchdown scored in each of 16 football games during a regular season. What is the average number of touchdowns scored per game, to the nearest tenth?
2.6
2.3
2.0
1.5
0.9
Given f (x) = 3x + 5 and g(x) = x2 − x + 7, which of the following is an expression for f (g(x))?
3x2 − 3x + 26
3x2 − 3x + 12
x2 − x + 12
9x2 + 25x + 27
3x2 + 21
A right circular cylinder is shown below, with dimensions given in inches. What is the total surface area of the cylinder, in square inches?
(Note: The total surface area of a cylinder is given by 2πr2 + 2πrh, where r is the radius and h is the height.)
3π
5π
6π
8π
11π
1 mã đề 20 câu hỏi
1 mã đề 20 câu hỏi
1 mã đề 20 câu hỏi
1 mã đề 20 câu hỏi
1 mã đề 20 câu hỏi
