Which is the best definition of substitution? 1. The process of multiplying a base by itself three times.

2. The process of simplifying an expression using the order of operations.

3. The process of replacing variables with numeric values.

4. The process of combining the coefficients of terms that have the same variable.

Write a positive or negative number to represent each situation. a. you win 150 dollars in a contest b. a loss of 15 yards in a football game c. 75 feet below sea level d. 35 degrees above 0 f e. a debt of 24.75 dollars

And employees salary increase by $4500 which represents a 15% raise what is the employees new salary

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below: