Write three expressions that are equivalent to the given expression.
7a+21

Ernest is purchasing a $175,000 home with a 30-year mortgage. he will make a $15,000 down payment. use the table below to find his monthly pmi payment.

Antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg