The frequency polygon below shows the distances thrown by the entrants in the University and College Discus Finals at the 2003 Drake Relays. What percent of the entrants had distances between 150 and 160 feet? Round your answer to two decimal places.

1.04X = $156, where X represents the value of the Saving Bond

Step-by-step explanation:

Okay, First step is to decide on a letter to represent the value of the Saving Bond, which in this case is chosen as X.

Second step is to understand the value of the increase of the saving bond in a year (in relation to X), this can be done by multiplying the value of the saving bond (which is X), the number of years (which is one year) and the interest rate (which is 4%), this gives;

X*1*4/100 = 0.04X

The third step is to sum up the initial saving bond value (which is X) and the increase in the saving bond in one year (which we found in step 2) and equate to $156, this gives;

X + 0.04X = $156

this adds up to 1.04X = $156