The annual interest rate is 19%. The balance after the grace period was $25,000. A payment of $1,500 was received on day 15. A payment of $500 was also received on day
22. What is the interest for the month?

Hillel is juggling flaming torches to raise money for charity. his initial appearance raises $500\$500 $500 , and he raises $15\$15 $15 for each minute of juggling performance. the amount rr r of money hillel raises is a function of tt t , the length of his performance in minutes. write the function's formula.

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.

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