Emily bought a pair of headphones on sale if they usually cost 36 dollars and 80 cents, and emily purchase them at 40 percent off, how much did she pay?

$22.08

Step-by-step explanation:

If Emily recieved 40% off then she paid 60% of the price. To find the sale price she paid, multiply the original price by the decimal conversion of 60%, 0.6.

0.6(36.80) = 22.08

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