At the pet shelter, for every 7 dogs there are 5 cats. what is the ratio of dogs to cats? a) 5 : 7 b) 7 : 5 c) 7 : 12 d) 12 : 7

With #! i’ve tried to figure it out but i can’t.

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers