Plz ! (don't have to do the plotting part, just the equation)

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

In parallelogram abcd the ratio of ab to bcis 5: 3. if the perimeter of abcd is 32 find ab

Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.