What is the period of the sinusoid given by y=-3cos(2pi/5x)? is it 2/5? explain.

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

The track team ran a mile and a quarter during their practice how many kilometers did her team runs?

Awindow has the shape of a rectangle with a semi circle at the top. find the approximate area of the window using the dimensions shown. 4ft by 8ft