james rides his bike for what he believes is 20 miles due west and then 21 miles due north. the distance from his starting point to where he is now is 29 miles

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64

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.

The diameter of the moon is about 3500 km. approximate the surface area of the moon using the formula for the surface area of a sphere, s = 4πr2. write your answer in scientific notation.