1) A student inherits $100,000and decides to invest half.The student has two investments to choose from; the first is a low risk investment that pays an average of 4% simple interest annually, the second has much more risk but averages 9% simple interest per year. If the student hopes to earn $3,0003 a year in interest, how much should be deposited in each investment?
2) A large solar heating panel requires 120 gallons of a fluid that is 3030% antifreeze. The fluid comes in either a 50% solution or a 20% solution. How many gallons of each should be used to prepare the 120-gallon solution?
3) British sterling silver is a copper-silver alloy that is 7.5% copper by weight.
How many grams of pure copper and how many grams of British sterling silver should be used to prepare 200 grams of a copper-silver alloy that is 10% copper by weight? (round to the nearest tenth)
4) For a particular linear function f(x)=mx+b f(-2)=11 and f(3)=-9 FIND m and b