Matt paid $55 at a restaurant. that amount included a 10% tip. what was the check amount before the tip?
$40
$43
$45
$50
$52

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

Erinn wrote the equation –5x + 4y = 32 to represent her hourly wage (y) and how this wage has changed during each year that she worked at a company (x). what is the rate of change in erinn's hourly wage per year?

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose