Evaluate the polynomial for the given value. 5y^2-y-7 when y=-4

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

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 ?

Determine the intercepts of the line that passes through the following points. (15,-3)(15,−3) (20,-5)(20,−5) (25,-7)(25,−7)