What are the zeros of the function f(x)=(x-6)(2x+10)

What is the number 321,000,000 in scientific notation? also what is the number? ?

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180