Write and evaluate an expression for the problem.

The scores on your first two history tests are 82 and 95. By how many points did you improve on your second test?

An expression is
.

You improved by
points on your second test.

Ahealth-food producer has 250 samples of a new snack to distribute in the mall. the producer has to keep at least 50 samples for display in the health food for the product launch. how long will the samples last if consumers are taking the samples at a rate of 25 every hour