Melinda’s heart beats 15 times during 1 − 6 of a minute. At that rate, how many times does her heart beat each minute?

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

using pemdas, (order of operations) you'll see the answer is 24.