Which expression is equivalent to 2x^2+7x+4?

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?