Write an expression to show : r less than 16

Will used 20 colored tiles to make a design in art class. 5/20 of his tiles were red. what is an equivalent fraction for the red tiles?

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared