Leila is saving for her retirement by making deposits of $22,000 on each birthday into a savings account starting on her 51st birthday and ending on her 64th birthday (inclusive). Given an effective annual rate of interest of 3.3%, how much will she accumulate by her 65th birthday

Anew 2-lane road is needed in a part of town that is growing. at some point the road will need 4 lanes to handle the anticipated traffic. if the city's optimistic estimate of growth is used, the expansion will be needed in 4 years and has a probability of happening of 40%. for the most likely and pessimistic estimates, the expansion will be needed in 8 and 15 years respectively. the probability of the pessimistic estimate happening is 20%. the expansion will cost $ 4.2 million and the interest rate is 8%. what is the expected pw the expansion will cost?