13. Suppose that a student has 100 vocabulary words to learn. It a student learns 20 words in 30 minutes, the function
L(t) = 100(1 - e -0.0074t) models the number of words, L,
that the student will learn after t minutes.
(a) After how long will the student learn 20 words?
(b) After how long will the student learn 70 words?

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.

7+(3n++8) what is the answer to this?

From a group of 10 men and 8 women, 5 people are to be selected for a committee so that at least 4 men are on the committee. howmany ways can it be done?