The tables show some input and output values:

table a
input output
1 7
2 7
2 9
4 5
table b
input output
6 1
7 3
8 2
9 5

which tables represent functions?
only a
only b
both a and b
neither a nor b

In the given figure ar(adf) =ar(cda) and ar(cdf) = ar(cdf). show that abdc and cdfe are trapeziums.

The marriott family bought a new apartment three years ago for $65,000. the apartment is now worth $86,515. assuming a steady rate of growth, what was the yearly rate of appreciation? what is the percent of the yearly rate of appreciation?

Which function has the domain x> -11