A bag contains 10 red balls, 5 blue balls and 7 green balls. Find the probability of selecting at random (a) a red ball (b) a green ball
(provide working)

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

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

What’s -11-33k and factor each expression completely