What is f(−3) for the function f(a)=−2a2−5a+4?

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

In a timed typing test lara typed 63 words per minute. estimate the number of words she should be able to type in half in hour show your work