Mary sold a diamond ring. the cost was $5,000. she gets a commission of 5%. how much does mary get?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

If a=0.333333 and b=0.55555, what is the value of a+b

Mrs. piazza invested 8000 in a certificate of deposit that pays 3% simple interest for 4 years. how much will be in mrs. piazza's account at the end of 4 years