Which correlation coefficient, r, best represents the following graph? * 3 points  r = 0.9 r = -0.09 r = -0.9 r = 0.09

Which expression is equivalent to 3^3 + 2^2?

How many solutions does the nonlinear system of equations graphed below have?

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?