Is the radicals in 225 a perfect square

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

Abcd is a square. what is the measure of angle bac

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?