Charles has 9 times as many red marbles as blue marbles. If he has 288 more red than blue marbles, how many red marbles does
he have?

Which of the following expressions is equal to 2x^2+8

Is there a direction u in which the rate of change of f(x,y)equals=x squared minus 3 xy plus 4 y squaredx2−3xy+4y2 at p(1,2) equals 14? give reasons for your answer. choose the correct answer below. a. no. the given rate of change is smaller than the minimum rate of change. b. no. the given rate of change is larger than the maximum rate of change. c. yes. the given rate of change is larger than the minimum rate of change and smaller than the maximum rate of change.

Graph the function =gx+2x3 and give its domain and range using interval notation.