Select the postulate that is illustrated for the real numbers.
6 · 12 = 12 · 6
1. the commutative postulate for multiplication
2. multiplication by one
3. the addition inverse postulate
4. commutative postulate for addition
5 the distributive postulate
6. the addition of zero postulate
7. the multiplication inverse

Which of the statements about the graph of the function y = 2x are true? check all of the boxes that apply. the domain is all real numbers x because the exponent of 2 can be any real number when the x-values increases by 1 unit, the y-value multiplies by 2. the y-intercept is (0, 1). the graph never goes below the x-axis because powers of 2 are never negative. the range is all real numbers.

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c

If (x + 8) is a factor of f(x), which of the following must be true? both x = –8 and x = 8 are roots of f(x). neither x = –8 nor x = 8 is a root of f(x). f(–8) = 0 f(8) = 0