A varies inversely with the square of r and when r = 4, A = 75. Find r when A = 48

r=​

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

What is the slope of the line shown below?

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x