The perimeter of the triangle ABC is 89 cm. Side AC is 47 cm less than the sum of the other two sides. Side BC is 20 cm more than half of side AB. Find the measures of each side of the triangle ABC. (Extra Credit: 5 points up
if solved by using determinant and Cramer’s Rule)

Bill works as a waiter and is keeping track of the tips he ears daily. about how much does bill have to earn in tips on sunday if he wants to average $22 a day? tips by day tips (dollars) monday tuesday wednesday thursday friday saturday $14 $22 $28 $36

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?