Annie bought 3/4 kg cocoa powder, which cost $12.92 per kg.

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)

Paul can type 60 words per minute and jennifer can type 80 words per minutes. how does paul's typing speed compare to jennifer's

At store a, erasers are sold individually. the cost y of x erasers is represented by the equation y=0.75x. the costs of erasers at store b are shown in the graph.