Find the magnitude and direction angle of the vector below. u (-8,15)

Which expression is rational? 6. , square root two, square root 14, square root 49

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?

Measure a and b and find their sum. how are the angles related?