Hiroto paid $4.28 in sales tax for the items that he purchased. if the sales tax rate was 6.25 percent, what was the total cost of the items before tax was added? $0.27 $0.68 $26.75 $68.48
2 minutes in test

the correct answer is the second option

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb