(7) Air is being pumped into a spherical balloon so that the volume increases at a rate of 50 cubic feet per second. How fast is the radius of the balloon increased when the diameter is 26 feet. Diameter = 2 times radius. Circle Area = Circle Area = TITZ Sphere Volume. 17 = (g) m3 lnx (8) Find the limit. Must use l'Hospital Rule. lim xpoo x1 (9) Find the equation of the tangent line to y = 2t sin t at point (an) (10) Find the derivative: 1:}: et (t3). Evaluate the drivative for t = o