C. fill in the blanks of the following statements with the correct missing words or phrases.

1.an expression involving a rapid increase or decrease is said to be ______.
2.the exponent of an exponential expression is _______showing how fast the function increase or decrease.
3.when an exponential expression depicts a relationship between two variables, it involves __________.
4.an ___________can be solved for all x values of those involving equations.
5.an exponential inequality is a/an ____________ that can also be a solved for all values of x.