What is the best way to solve this system of equations:
5a+3x=452
a+x=108
any is much appreciated!

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

In a young single person's monthly budget, $150 is spent on food, $175 is spent on housing, and $175 is spend on other items. suppose you drew a circle graph to represent this information, what percent of the graph represents housing?