Refer to the following graph. the angle of rotation is 90 degrees -90 degrees 0 degrees

If the figure rotated clockwise then it would be -90, if the figure rotated counterclockwise then it would be 90, and if the figure appears to not have moved at all it would be 0.

Hope this helps! ;)

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.