Don’t know the answer

If i have 20$ and i gave 5$ away how much i got

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

Which rule describes the composition of transformations that maps ajkl to aj"k"l"? ro. 900 o to, -2(x, y) to, -20 ro, 900(x, y) ro, 9000 t-2. o(x,y) t-2, 00 ro, 900(x, y)