What is the value of the expression 4x+y when x = 2 and y = 4?

2y-x
a.2
b.3
c.4
d.6

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

Identify the function that contains the data in the following table: x     -2         0         2         3         5     f(x)     5         3         1         2         4     possible answers: f(x) = |x| + 1 f(x) = |x - 2| f(x) = |x - 2| - 1 f(x) = |x - 2| + 1