1. for which value of x is the expression log base 4 of (x+3) not defined?
a. 0
b. -2
c. 3
d. -4
2. if log 7= a, what is the value of log 490 in terms of a?
3. for what value of k will the graph of y=log base 7 of x contain the point (1,k)?

Alake near the arctic circle is covered by a 222-meter-thick sheet of ice during the cold winter months. when spring arrives, the warm air gradually melts the ice, causing its thickness to decrease at a constant rate. after 333 weeks, the sheet is only 1.251.251, point, 25 meters thick. let s(t)s(t)s, left parenthesis, t, right parenthesis denote the ice sheet's thickness sss (measured in meters) as a function of time ttt (measured in weeks).

Which of the following tables represents exponential functions?

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?