Solve for y and find the measures of ∠7 and ∠8

What is the ratio of the length of an object in yards to the length of the same object in miles?

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?

What makes a trapezoid an isosceles trapezoid?