PLS HELP I forgot how to do this..

—the graph shows how fast a strand of human hair grows. how many inches would the hair have grown in 5 months

Phillip had some bricks. he stacked them in 6 equal piles. which expression shows the number of bricks phillip put in each pile? let the variable m stand for the unknown number of bricks. m + 6 m÷6    m−6    6m

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)