X+ 1/x =5 what is the value x²+1/x²?

Data are collected to see how many ice-cream cones are sold at a ballpark in a week. day 1 is sunday and day 7 is the following saturday. use the data from the table to create a scatter plot.

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10