Please help, doing final exam! <3 SQRT is a parallelogram. If m∠QST = 72°, which of the following statements is true?

quadrilateral SQRT has diagonals QT and SR that intersect at point U

m∠SQR = 72°
m∠QRT = 72°
m∠QSR = 36°
m∠TRQ = 108°

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab