Hector is training for a race that is 10 kilometers long. on saturday he ran 2.5 km. he plans to add 0.5 km to his distance every saturday.
hector tracks his progress by adding 0.5 every week.
2.5 + 0.5 = 3.0
3.0 + 0.5 = 3.5
⋮
9.5 + 0.5 = 10
which equations are equivalent to his weekly addition of 0.5 km and would correctly determine how many weeks it will take hector to reach 10 km if he starts at 2.5 km and adds 0.5 km every week? select all that apply.
a. 0.5x + 2.5 = 10
b. 0.5 – 2.5 = 10x
c. 10 = 2.5 + 0.5x
d. 2.5x + 0.5 = 10
e. 2.5x – 0.5 = 10

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?