6.4 ANSWERS Which level of difficulty should you choose

a) Calculate 5p - 2l when p = 1 and l = 4

= 5 ^. 1 - 2 ^. 4

= 5 - 2 ^. 4 

= 5 - 8 

= -3 

 

b) Simplify 2k + 8m + k + 9m

= 2k + 8m + k + 9m

= 3k + 17m