Which piecewise relation defines a function?
x; x< -2
f(x)= 0; -25x54
1-2; x24
x x5-2
g(x)= 4; -2 x2+1; x22
|-3x, *< -2
h(x)= 3; osx< 4
2x; x24
1-3x, xs-4
j(x)= 3: -5 2x, xz1

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30