Can someone help me please? and if its okay can you show the step by step explanation.​

What is the perimeter of square abcd? units units 28 units 37 units

3x = 729 solve for x plz . it's urgent. will mark

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?