PLEASE DON'T WRITE IF YOU DON'T KNOW THE ANSWER With the satellite directly overhead, how far above the surface of Earth does the satellite need to be so it provides the maximum coverage of its signal?

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?