Solve the following system of equations. enter the y-coordinate of the solution. round your answer to the nearest tenth 5x+2y=21 -2x+6y=-34

Which facts are true for the graph of the function below? check all that apply. f(x) = log8 x. (30 points pls )

Urgent? will give brainliest to the first correct answer what is the area of the figure?

The volume of a spherical hot air balloon v(r) = 4 3 ? r3 changes as its radius changes. the radius is a function of time given by r(t) = 3t. find the instantaneous rate of change of the volume with respect to t at t = 2.