20. The total cost of 3 apples and 4 pears is £1.84
The total cost of 5 apples and 2 pears is £1.76
Work out the cost of one apple and the cost of one pear.

He concluded that a heavier object dropped from the same height as a lighter object will land

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?