In a shipment of 500 light bulbs, 25 of them were broken. What percentage of the light bulbs were broken?

What are the possible rational zeros of [tex]f(x) = x^4+2x^3-3x^2-4x+18[/tex]

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2

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