make a pentagon with the same area as a circle with the diameter of 14 inches

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

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

Math it's appreciated. (picture provided)