For less than three times a number it’s greater than two times a number -1

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

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

Evaluate the expression. (9 + 5)(3 + 2)0