The speed of a stream is 4 mph a boat travel 3 miles of stream in the same time it takes to travel 11 miles down stream what is the speed of the boat and still water

99 points at a zoo, the leopard pen has a ring-shaped sidewalk around it. the outer edge of the sidewalk is a circle with a radius of 12 m. the inner edge of the sidewalk is a circle with a radius of 8 m. (1 point for showing all of your work) a. write and simplify an expression for the exact area of the sidewalk. (1 point for the answer) b. find the approximate area of the sidewalk. use 3.14 to approximate π. (1 point for the answer)

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1

Fiona has to plot a histogram of the given data