LERES
Which is a quadratic function?
f(x) = 2x + x + 3
f(x) = 0.x2 - 4x + 7
f(x) = 5x2 - 4x + 5
f(-x) = 3x3 + 2x + 2
How do you know it’s a quadratic function

Evaluate cos2θ for cosθ = square root of 3/2

What is the slope of the line shown below?

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?