Me with 18 just 18 the best answer gets marked as the "brainliest"

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

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.