Which set is closed under the operation multiplication?

A.

{1, 2, 4}

B.

{0.5, 1, 2}

C.

{0}

D.

{1, 2, 3, 4, 5}

Determine the axis of symmetry and the vertex of the given function. y = 2x2 - 12x + 21 Axis of symmetry: x =

Convert 9/3 to a percentage

What is the least common multiple of 5, 20, and 33?

3 hours worked for $12; 9 hours worked for $36

Simplify the numerical expression. - 3.6 : (-60)

Solve for p (p+3) 2-64 -61‾‾‾√ and 61‾‾‾√ 6‾√ and 8‾√ 5 and - 11 -5 and 11

Which of the following is a step in the investment planning process? A. Evaluate your risk tolerance level. B. Monitor your spending every 5 years. C. Make major purchases before you start planning. D. Monitor your investment plan every 10 years.

Which expression is equivalent to 28 (15+9) ? 28 + 15 x 28 + 9 28 x 15 + 9 28 + 15 + 28 + 9 28 x 15+28 x 9

9. 1/2 (16 + 4 + 4) + (6 X 4 = 8) I do not no how to do this

What is the minimum value of the function y=x^2+3x-4?