CAN SOMEONE PLEASE HELP IM TIMED!! also i need to show my work!

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1

The function f(x) is shown in this graph the function g(x)=6x

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).