How many different ways can you choose a council with exactly 3 sophomores, 1 junior, and 2 seniors?

In the coordinate plan (-6,9) b (3,9) c (3,3) def is shown in the coordinate plan below

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

What expression is equivalent to log3(x+4)