Dana just finished paying off $15,400 loan she took out four years ago. The loan had 6.68% interest, compounded monthly. If Dana paid a total of $18,321.60, how much did she pay in service charges? A) $730.08
B) $366.49
C) $1,028.72
D)$266.76
Please show work.

Jayda's house is located at (1, 5). she can walk in a straight line to get to cristian's house. a fast-food restaurant is located at (11, 0) and partitions the way from jayda's house to cristian's house by a ratio of 5: 1. find the coordinate of cristian's house. me . im a little stuck

Prove that the sum of two consecutive exponents of the number 5 is divisible by 30.if two consecutive exponents are 5n and 5n + 1, then their sum can be written as 30.

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.