If I paid $2.50 in taxes on a $45 item, what percentage rate of taxes did I pay?

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Choose the equation that represents the graph below: (1 point) graph of a line passing through points negative 3 comma 0 and 0 comma 3 y = x − 3 y = −x + 3 y = −x − 3 y = x + 3 will award !

At oaknoll school, 90 out of 270 students on computers. what percent of students at oak knoll school do not own computers? round the nearest tenth of a percent.