Which graph represents a phase shift of pi/2 units right for the graph of y=cosx

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank

Question 3(multiple choice worth 1 points) use the arc length formula and the given information to find r. s = 16 cm, θ = 48°; r = ? sixty divided by pi cm thirty divided by pi cm one third cm one hundred twenty divided by pi cm