Find and interpret the given function values and determine an appropriate domain for the function

Afruit stand has to decide what to charge for their produce. they need $10 for 4 apples and 4 oranges. they also need $15 for 6 apples and 6 oranges. we put this information into a system of linear equations. can we find a unique price for an apple and an orange?

Consider the graph of the exponential function y=3(2)×

What is the missing step in this proof ?