A variable needs to be eliminated to solve the system of equations below. Choose the correct first step. 8x+9y= -82
-x-9y=89

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year

Polygon abcde is reflected to produce polygon a′b′c′d′e′. what is the equation for the line of reflection?

Mario has $14.35 left in his wallet. he spent $148.43 for tablecloths. then, he spent $92.05 for napkins. how much money did mario have in his wallet to start with?