Asap i only need part b. 50 points 6th grade math
me out im stuck will give brainliest

Which of the following statements would be sufficient to prove that parallelograms pqrs is a rectangle ?

Consider the linear function that is represented by the equation y= 4x+5

There are a total sales of 2,000 dollars on monday on tuesday sales dropped 10% on wednesday sales dropped another 20% compared with tuesday from wednesday to thursday sales increases by an equal amount to 25% of monday total sales what is the net change in dollars on total sales from monday to tuesday