It takes 20 minutes for 5 people to paint 5 walls. how many minutes does it take 9 people to paint 9 walls?

Find the least common denominator for thesetvo rational expressions.n^2/n^2+4n+4 -3/n^2+7n+10

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.

Acompany made a profit of 75000 over a period of 6 years on an initial investment of 15000 what is the annual roi