Mr. and mrs. smith retired on 80 percent of their pre-retirement earnings. if they are living on $35,000 per year, what was the total amount of their pre-retirement income?

a) 28,000
b) 43,750
c) 63,000
d) 78,750

these sign is used to tell weather the number is greater or less than the number   <   or >     but this sign means its equal =    

hope this you and

step-by-step explanation:

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