Number Puzzle. 3. Here is a number puzzle that uses math. Some might call it a magic trick!

a. Think of a number.

b. Double the number.

c. Add 9

d. Subtract 3.

e. Divide by 2.

f. Subtract the number you started with.

g. What is your answer?

h. Why is it always 3?

The mathematical expression 9€ t means

Determine whether the points (–3,–6) and (2,–8) are in the solution set of the system of inequalities below. x ? –3 y < 5? 3x + 2 a. the point (–3,–6) is not in the solution set, and the point (2,–8) is in the solution set. b. neither of the points is in the solution set. c. the point (–3,–6) is in the solution set, and the point (2,–8) is not in the solution set. d. both points are in the solution set.

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x