The domain of {(x, y): y = 2x² + 1 is

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

1. what is the measure of ∠abc? what is the measure of ∠abd?

This is so hard and it’s for a test