Plz i need help

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.

Which of the following circles have their centers in the third quadrant?