Multiply -2y^2 • xy^4

a) -2xy^8
b) 4xy^6
c) -2xy^6
d) -2x^3y^4

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2

Aculture started with 4,000 bacteria. after 5 hours, it grew to 5,200 bacteria. predict how many bacteria will be present after 19 hours. round your answer to the nearest whole number.

Factor the following expression completely 6x^11-24x^7