Alex has three times as much as jennifer. jennifer has $12 less than shannon. together they have $91. how much money does alex have?

Find the cosine function that is represented in the graph.

Consider the function f(x)=-5x+3 what is f(-2)

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?