Doug family buys 7 postcards while on vacation. each postcard cost $0.25 including tax. how can doug use what he knows whole number multiplication to check his answer

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

15: 24

62.5%

step-by-step explanation:

the answer is d.x= 90°

y= 50°

arc lm= 100°

i got this one chief