Ahotel offers two activity packages. one costs $192 and includes 3 h
of horseback riding and 2 h of parasailing. the second costs $213 and includes
2 h of horseback riding and 3 h of parasailing. what is the cost for 1 h of each
activity?

We are given with two hotel offers: $192 for 3h horseback riding and 2h parasailing and the other one: $213 for 2 h horseback riding and 3h parasailing. IN this case, we translate the statements into equations:
192 = 3x + 2y213 = 2x + 3y
x = 30y = 51
Hence, the cost for one hour each is $30 for horseriding and $51 for parasailing

the answer would be c ≈ 18.852*3.14= 6.286.28*3=18.85