If you had half a dollar, three quarters, eight dimes, six nickels, and nine pennies, how much money would you have altogether?

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?

The price of a visit to the dentist is calculated according to the formula 50+100n50+100n where nn is the number of cavities the dentist finds. on your last visit to the dentist, 22 cavities were found. what was the cost of your visit?

The diameter of the moon is about 3500 km. approximate the surface area of the moon using the formula for the surface area of a sphere, s = 4πr2. write your answer in scientific notation.