What's the answer to this problem i'm stuck

Which function families have maximums and minimums? 1.)linear absolute value functions and exponential functions 2.) linear absolute value functions and quadratic functions 3.) linear absolute value functions and linear functions 4.) linear absolute value functions and constant functions

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.