The cost to rent a paddleboat at the city park includes an initial fee of $7.00, plus $3.50 per hour. which equation models the relationship between the total cost, y, and the number of hours, x, that the paddleboat is rented?

Y = 7 + 3.50x

you multiply the number of hours by 3.50$ and add 7$ to that to get total cost

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle