Which formula gives the x-coordinates of the maximum values for y = cos(x)?
k pi for any integer k

k pi for k = 0,+/-2 +/-4,...

k pi/2 for any positive integer k

k pi/2for k = 0,+/-2,+/-4,...

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total

Ineed with math stuff it involves graphs

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?