A good stockdash–based mutual fund should earn at least 55% per year over a long period of time. Consider the case of Barney and Lynn, who were overheard gloating (for all to hear) about how well they had done with their mutual fund investment." We turned a $25 comma 00025,000 investment of money in 19821982 into $100 comma 000100,000 in 20072007."

5.70%

Step-by-step explanation:

Correct word "We turned a $25,000 investment of money in 1982 into $100,000 in 2007."  What return (interest rate) did they really earn on their investment?

No of years(1982 to 2007) = 25 years

The average annual return is R%, so $25,000 * (1 + R)^25 = $100,000

(1 + R)^25 = $100,000 / $25,000

(1 + R)^25 = 4

We take 25th root on each side

(1 + R)^(25*1/25) =

1 + R = 1.0570

R = 1.0570 - 1

R = 0.057

R = 5.70%

So, the return (interest rate) they really earn on their investment is 5.70%.

2 & 7

step-by-step explanation:

he climbs 300 ft/hr at a constant rate. the peak is at 1,500 ft.

when going up, he reaches 600 ft in 2 hours. remember, that he is going in a constant rate. divide 600 with 300:

600/300 = 2

assuming that he takes the same route back (meaning that it's a 1500 ft route back, you can solve.

note also that you are solving when he gets back to 600 ft after he reaches the peak.

first, find the amount of hours it takes to get up the peak. divide the total amount (1500), with the ft/her (300) to get the amount of hours (x):

1500/300 = x

x = 5

it takes jamie 5 hours to get up. now, he is returning down, and reaches 600 (his current destination). remember that he climbs at a constant 300 ft/hr. divide 600 with 300:

600/300 = x

x = 2

now add the two numbers together.

x = 5 + 2 = 7

jamie takes 7 hours to go up the mountain and reach his current position when descending.

(total amount/constant rate) = (time).

remember that it is a constant rate, so in total, when he gets back down the mountain, it will take the same amount of time as when he goes up. the total amount for the round trip is: 5 + 5 = 10.

~

3 qrs + 3/2 xy hope this : /

step-by-step explanation: