Find the domain of each function

51. f(x)=5x+4
52. f(x) = x^2 +2
53. f(x) = x/x^2+1
54. f(x) = x^2/ x^2 +1

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

What is the remainder when 2872 is divided by 76? a) 51 b) 57 c) 60 d) 63

Okay so i didn't get this problem petro bought 8 tickets to a basketball game he paid a total of $200 write an equation to determine whether each ticket cost $26 or $28 so i didn't get this question so yeahyou have a good day.