As part of a statistics project, a 6th grade teacher brings to class a container with 200 red marbles and 800 white marbles which are thoroughly mixed. To figure out how many marbles in the container are red without actually counting them all, a student randomly draws 150 marbles from the container. Of the 150 marbles drawn, 33 are red.The sampling proportion is
A. 15%.
B. 25%.
C. 75%.
D. 22%.
E. none of these
Answer: A
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Solve the problem. Round to the nearest unit.67 is 0.74% of what?
A. 90,540 B. 1 C. 9,054 D. 100
Simplify the polynomial by adding or subtracting, as indicated. Express your answer as a single polynomial in standard form.Find the sum of (8x6 - 6x4) and (4x6 + 9x4 + 3).
A. 12x11 B. 3x + 3x6 - 3x4 C. 12x6 + 3x4 + 3 D. -2x6 + 17x4 + 3x
Graph the function. Describe its position relative to the graph of the indicated basic function.f(x) = 4x-3 - 3; relative to f(x) = 4x
A. Moved left 3 unit(s);
moved up 3 unit(s)
B. Moved right 3 unit(s);
moved up 3 unit(s)
C. Moved left 3 unit(s);
moved down 3 unit(s)
D. Moved right 3 unit(s);
moved down 3 unit(s)
Solve.If Gloria received a 7 percent raise and is now making $24,610 a year, what was her salary before the raise?
A. $24,000 B. $22,610 C. $23,610 D. $23,000