Select all equations that represent a linear function. y = x(2x - 3)
y = 0.4x - 2.2
y = x/3
3x + 9y = 54
2/x - 8 =y

also, could someone explain what these linear functions are?

Blank × 10-3 is 2,000 times greater than 1.9 × 10-6. it is also blank times greater than 9.5 × 10-4.

Which of the binomials below is a factor of this trinominal? x^2-13+30

3women sell hats at a craft fair weekly. the money they make at the fair is split into categories. 9% goes to pay taxes. $55 goes to pay rent for the space they sell in. the rest is split between the women. if the group make $706 at the fair, how much does each women get paid once the money is divided