The graph shows the relationship between time (minutes) and distance (meters) for Mason's training run. What is the unit rate for Mason's run?

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Frank owns a $141,000 home, for which he has a 30-year mortgage in the amount of $700 a month. once he has paid off mortgage, how much will he have paid in investment? a. $111,000 b. $109,000 c. $120,000 d. $141,000

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”?