Elena bikes 20 minutes each day for exercise. Write an equation to describe the relationship between
her distance in miles, D, and her biking speed, in miles
per hour, when she bikes at a constant speed of 15
miles per hour for the first 5 minutes, then at 12 miles
per hour for the last 15 minutes.

Finally, the arena decides to offer advertising space on the jerseys of the arena’s own amateur volley ball team. the arena wants the probability of being shortlisted to be 0.14. what is this as a percentage and a fraction? what is the probability of not being shortlisted? give your answer as a decimal. those shortlisted are entered into a final game of chance. there are six balls in a bag (2 blue balls, 2 green balls and 2 golden balls). to win, a company needs to take out two golden balls. the first ball is not replaced. what is the probability of any company winning advertising space on their volley ball team jerseys?

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b