Jack has 14 cards. by the end of the week his amount of cards has doubled. how many cards does jack have now

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.

If you can solve all of these i will give ! - 4% of 190 - 4% of 162.5 - 4% of 140 - a 4% increase from 155.1 - a 4% increase from 159.8