What is the value of the discriminant of the quadratic equation -1= 5x^2 -2x, and what does its value mean about the number of real number solutions the equation has?

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

Ihave trouble finding the nth term of a linear sequence

The function models the number of accidents per 50 million miles driven as a function