Quadrilateral PRST is reflected across the y-axis to create quadrilateral P'R'ST'. Which rule describes this transformation?
A (x, y) (x,-Y)
B (x, y) → (-x, y)
C (x, y) → (y. -*)
D (x, y) - (y, x)

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

If mary had 320 toy cars and she gave her friend 50 cars and then she gave her brother 72 more cars how much toy cars would mary have left ● explain with proper details