In regression analysis, which statements are true?
i. data sets that include an influential point are nonlinear.
ii. influential points always reduce the coefficient of determination.
iii. all outliers are influential data points.
a) i only
b) ii only
c) iii only
d) none are true

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.