If the diameter of the circle is 6 cm, find its circumference. [Use 3.14 for π.]
please hurry!

How many of the 250 grandparents in the population would you expect to prefer online shopping with merchant a? merchant a: 4 merchant b: 6 merchant c: 2 merchant d: 3 other: 5 none: 5 answer choices: a. about 4 b. about 8 c. about 40 d. about 21

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

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