exam Maths Puzzle Numerical Ability

Graph basic functions of one variable.

A. Graph the function f(x) = -3x + 7. Be sure to properly label the graph, which includes labeling the axes and the line with its equatio

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exam Other Question

Three missionaries and three cannibals wish to cross a river. There is a boat that can carry three people and either a missionary or a cannibal can operate the boat. Of course, at ok I want to see if I am doing this right?

(8/21w) + (2/9w)

3w/(21w)(9w) + 2(21w)/(21w)(9w)

3w+42w/(21w)(9w)
Now is this correct?
Do I have to simplify it more?
I got 2/3w