Please help with this

B) 5

Step-by-step explanation:

Solve by ratios.

10/5x = 8/20

Cross multiply.

5x × 8 = 20 × 10

40x = 200

Divide both sides by 40.

(40x)/40 = 200/40

x = 5

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

probably .5

i can on others if necessary.