15 points! Need a response ASAP so I can move forward on the actual assignment

What percent of the circle below is shaded?

Define multiplicative inverse. give an example of a number and its multiplicative inverse.

Abarbecue sold 26 hamburgers and hot dogs. hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. if the barbecue made $70 in sales, determine and state the number of hot dogs sold.