Help asap please
What is the product?

negative 9 x (5 minus 2x)

18 x squared minus 45 x
negative 18 x squared minus 45 x
negative 18 x minus 45 x
18 x minus 45 x

Aculture started with 3000 bacteria. after 5 hours it grew to 3900 bacteria. predict how many bacteria will be present after 9 hours

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83