Who has the book integrated mathematics volume 2

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

Plz ( true - false) all triangles have interior angles whose measure sum to 90.