Solve for X using either sine, cosine, or tangent

Three times the sum of a number and seven is negative thirty-six. what is the number?

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm

Find two consexutive odd integers such that the sum of their square is 650