Whenever x and y are both integers, what is (6.0 × 10x)(5.0y × 10y)expressed in scientific notation?
(F) 30.0 × 100xy
(G) 30.0 × 100xyy
(H) 30.0 × 10xy
(J) 3.0 × 10x + y + 1
(K) 3.0 × 10xy
If the equation for the line shown in the following graph is 
, what is the value of kn?
(A) 9(B) 12(C) 15(D) 18(E) 24
Correct Answer: D
If 3x + 2y = 5, what is the value of the expression 6x + 4y - 7?
（A）-2 （B） 3 （C） 8 （D） 10 （E） 19
Correct Answer: B
Susie has three T-shirts: one red, one blue, and one black. She also has three pairs of shorts: one red, one blue, and one black. How many different combinations are there for Susie to wear exactly one T-shirt and one pair of shorts?
(F) 3 (G) 6 (H) 8 (J) 9 (K) 27
Correct Answer: J
More ACT Math Exam Questions
- 1
In the standard (x,y) coordinate plane below, 3 of the vertices of a rectangle are shown. Which of the following is the 4th vertex of the rectangle?
- 2Six equilateral triangles form the figure below. If the perimeter of
each individual triangle is 15 inches, what is the perimeter of ABCDEF, in inches?
- 3
There are 45 musicians in an orchestra, and all play two instruments. Of these musicians, 36 play the piano, and 22 play the violin. What is the maximum possible orchestra members who play both the piano and the violin?
- 4What values of x are solutions in the equation x2 + 4x = 12?
- 5For any positive two-digit integer x with tens digit t, units digit u, and t ≠ u, y is the two-digit integer formed when the digits of x are reversed. What is the greatest possible value of (y - x) when t is less than u?