The tax rate as a percent, r, charged on an item can be determined using the formula   – 1 = r, where c is the final cost of the item and p is the price of the item before tax. louise rewrites the equation to solve for the final cost of the item: c = p(1 +  ). what is the final cost of a $40 item after an 8% tax is applied?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)

Solve for x and select the correct answer