Which statements are true regarding the regular dodecagon? Check all that apply

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

What value of x is in the solution set of 4x - 12 s 16 + 8x? -10 -9 -8 -7

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared