For the last three literally just plug the values in. For the first two, you nees the equation. Since he paid 18 just to go in, regardless of how many rides he goes on, you start with +18. Then, for every ride he has to pay 3, so it would +3r, so then the total he pays for r rides is 3r+18. Then for the second question, he rode 13 rides, so plugging in 13 we get 57.
343 = 7*7*7, so the square root is 7*sqrt(7), because there is one 7 left in the square root after taking out the other 2.
Final answer:
7*sqrt(7), or about 18.52
Hope I helped :)
Answer:
Will do
Step-by-step explanation:
Because you are missing one whole side of the triangle