Look back at Model it. How does substituting x + 2 for y in the second equation give you an equation that you can solve

Which strategy is used by public health to reduce the incidence of food poisoning?

50 will mark show all use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2x+9y= -26 -3x-7y=13

In a sale there is 25% of all prices a chair costs £45 in sale how much was it before the sale