8x2 + 15x = 7x - 4
Can someone help solve this in using the quadratic formula

Provide an example of a trigonometric function and describe how it is transformed from the standard trigonometric function f(x) = sin x, f(x) = cos x, or f(x) tan x using key features.

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

Which system of linear inequalities is represented by the graph?