The graph models the amount of radioactive element present over the course of a 10-minute experiment. What is the average rate of change of the amount of the element over the 10-minute experiment?

A. -2.0 g/min
B. -1.8 g/min
C. -0.2 g/min
D. -5.0 g/min

The long jump record, in feet, at a particular school can be modeled by f(x) = 19.6 + 2.5ln(x + 1) where x is the number of years since records began to be kept at the school. what is the record for the long jump 11 years after record started being kept? round your answer to the nearest tenth.

What is the measure of the smallest angle in the diagram? 15 29 32 45

Need ! the total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?