They pay $18 for 12 dozen buttons. How much do 4 dozen buttons cost.

Which expression shows the sum of the polynomials with like terms grouped together

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.