Khawla drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took 10 hours. When Khawla drove home, there was no traffic and the trip only took 7 hours. If her average rate was 18 kilometers per hour faster on the trip home, how far away does Khawla live from the mountains? Do not do any rounding.

The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a.the profit when the unit price is equal to 0b.the unit price(s) when the profit is equal to 0c.the profit when the unit price is greatestd.the unit price(s) when profit is greatest