Entertainment A group of 4 friends planning a fun day trip. To raft down a river costs $6 per person plus $10 for transportation of the raft. An amusement park costs $13 per person. A hot air
balloon ride costs $20 per person, but they have a $30 group discount coupon.
Activity Cost ($) The table shows equations for the total cost of each activity for n people.
Raft trip
6n + 10 = 50 Which activity should they choose if they want to spend exactly $50?
Amusement
13n = 50
Park
Balloon
20n - 30 = 50

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?