Kiki runs 4 3/7 miles during the first week of track practice. She runs 6 2/3 miles during the second week of track practice. How much longer does Kiki run during the second week of track practice than the first week of track practice?

1 5/21 mi

1 2/5 mi

2 5/21 mi

2 2/5 mi

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

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?

Factor the expression using gcf 9b+45