If f(x) = 10x + 7 and g(x) = x^2 - 7x, find (f - g)(x)

a. (f - g)(x) = x^2 + 3x + 7
b. (f - g)(x) = 10x^3 - 63x^2 - 49x
c. (f - g)(x) = -x^2 + 17x + 7
d. (f - g)(x) = 10x + 7

Ineed big ! the cost of a school banquet is $25 plus $15 for each person attending. create a table, sketch the graph, and write an equation in slope-intercept and point-slope form that gives total cost as a function of the number of people attending. what is the cost for 77 people?