The sum of two numbers is 52 . the larger number is 12 more than the smaller number. what are the numbers?

The train station clock runs too fast and gains 5 minutes every 10 days. how many minutes and seconds will it have gained at the end of 9 days?

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

The graph of f(x) is obtained by reflecting the graph of f(x)=-3|x| over the x-axis. which equation describes f(x)? a) f(x)=3|x| b) f(x)=|x+3| c) f(x)=-3|x| d) f(x) = - |x+3|