For f(x) = 2x + 1 and g(x) = x^2 - 7, find (f-g)(x)

Under normal conditions, 1.5 feet of snow will melt into 2 inches of water. during a winter season high in the mountains, 301 feet of snow fell. how many inches of water will there be when the snow melts?

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?