What is the area of this parallelogram?

What is the solution set of the quadratic inequality x^2-5< or equal to 0

Evaluate cos2θ for cosθ = square root of 3/2

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax