Write the equation of a parabola with focus of (1,-2) and vertex at (9,-2). a. 6+ 2)2 = 32(x - 1) C. (x + 2)2 = -32y-9) b. (+ 2)2 = -32(x - 9) d. (x+2) = 32(y-9)​

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

What number gives you a irrational number when added to 2/5

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.