Different question: FInd the Missing angle and Round to the nearest 10th I just need explanation on this and i will be good.

Me i’m stuck on all these questions besides the two bottom ones

It costs $4.50 per person for 2 people and $3.00 per person for 3 people to go on a horse carriage ride. using c to represent the cost per person and n to represent the number of people, which equation models this relationship? a. c + n = 7.50 b. 2n + 3n = 7.50 c. cn = 9.00 d. 9.00n = c

If f(x) = x - 5, evaluate each of the following. type a numerical answer in the space provided. f(-1) a0 f(0) a1 f(1) a2 f(2) a3 f(5) a4 f(8) a5