Find each value. h(x)=x2-5x+7 4) h(2)=? 5) h(-5)=? 6)금+n(-8)=?

At 6 am, an online company has sold 120 items that day. If the company sells an average of 30 items per hourfor the remainder of the day, write an expression to represent the number of items that were sold n after 6 am.

Find the difference: (8x2+3x19)(7x214) .