A savings account compounds interest at a rate of 27% once a year. Katie puts $500 in the account. What is the original amount, aka principal amount?
A. $500
B. 27
C. Cannot be determined.

For the given quadratic equation convert into vertex form, find the vertex and find the value for x=6 y=-2x^2+2x+2

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.

Afamily went out to dinner and their bill was $113.if they want to leave a 19% tip, how much should they leave.