eight more than the quotient of a number and 7 is equal to 5. Translate the sentence into an equation

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Each cookie sells for $0.50 sam spent $90 on baking supplies and each cookie cost $0.25 to make how many cookies does sam need to sell before making a profit formula: sales> cost

Find the solution of each of the following.