The recommended daily allowance for a 13 year old is 2,000 calories a double decker taco contains 16% of this amount how many calories does a double decker taco contain

What is the solution to the system of equations? y=1.5-3 y=-x

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 = 4? r^2. write your answer in scientific notation.

Since we have computer algebra systems that can solve polynomial division problems for us, why is it necessary to learn how to do these things by hand?