What is the value of X?

R=120 degrees

T=130 degrees

X=blank degrees

Abag contains 3 red marbles 4 white marbles and 5 blue marbles if one marble is drawn from the bag what is the probability that the marble will be blue

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?