Awasher and dryer cost $978 combined the washer cost $78 more than the dryer what is the cost of the dryer

$450

Step-by-step explanation:

2x+78=978

2x=900     [subtract 78 from both sides]

x=450        [divide both sides by 2]

(w – 2.5)(w + 2.5)

(–4v – 9)(–4v + 9)

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