I need help solving this

Given abcd ac=38 and ae=3x+4 find the value of x

Graph g(x)=2cosx . use 3.14 for π . use the sine tool to graph the function. graph the function by plotting two points. the first point must be on the midline and closest to the origin. the second point must be a maximum or minimum value on the graph closest to the first point.

Witch sequence shows a pattern where each term is 1.5 times the previous term