For the equation a(x+6)=-2x+b. if a=3 what value of b will make x=4

What is the slope of the line that contains the points (4,8) and (9,8)? what type of line is it?

Is the power produced directly proportional to the wind speed, give reasons for your answer?

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.