1. Which pair of expressions below are equivalent? 7 7(2x) and 9x 4(2x - 67 and 8x424 3x + 5x and 15% x + x + x + x and x to the fourth power​

John bought 5 lemons and used 2 of them for a salad how much did he use for. a salad . he used % of the lemons.

Find the average speed of a rabbit that runs a distance of 22 m in a time of 1.8 s .

It is given that the quadratic equation hx²-3x+k=0, where h and k are constants, has roots [tex] \beta \: and \: 2 \beta [/tex]express h in terms of k