Sam invested $48000 some at 6% interest and the rest at 10% how much did he invest at each rate if he received $4000 in interest in one year

Ajar of gumballs contains 4 reds, 2 greens, and 6 blues. what is the probability of getting two blues in a row without replacement?

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.

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.