Factor a number, variable or expression out of the polynomial below
x(4x-5)+9(4x-5)
a) 9x(4x+5)
b)(x+9)(4x-5)
c)9x(4x-5)
d)(x+9)(4x+5)

Find the values of y: 3y^3(y^2+ 2/3y)=0

The trigonometric ratios sine and secant are reciprocals of each other

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?