Math easy just shapes also there might be 2 awnsers pr not even though it says pick all that apply

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

What can you determine about the solutions of this system

You buy five cds at a sale for $5.95 each. write an expression for the total cost of the cds. then use the distributive property and mental math to evaluate the expression.