Karl works at Moe's grocery. This year Karl was paid $30,000 in salary, but he was allowed to purchase his groceries at 15 percent below Moe's cost. This year Karl spent $2,040 to purchase groceries, costing Moe $2,400. The groceries were worth $3,600. What amount must Karl include in his gross income

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?