the water level of a river is 50 feet. After one day,the water level has decreased to 38,5 feet. After two days, the water level is 37 feet,and after three days,the water level is 35.5 feet. write an equation to represent the water level,L after d days.
water level=-1.5d+40 for d=1,2,3,...
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A BOOK HOLDS 7.75 LITERS OF WATER
HOW MANY WATER DOES IT HOLDS
To write an equation representing the water level, L, after d days, we can use the information given in the problem. Let's analyze the patterns in the data:
1. The water level starts at 50 feet.
2. After one day, the water level decreases by 50 - 38.5 = 11.5 feet.
3. After two days, the water level decreases by another 38.5 - 37 = 1.5 feet.
4. After three days, the water level decreases by another 37 - 35.5 = 1.5 feet.
Based on these patterns, we can deduce that the water level decreases by 11.5 feet initially, and then decreases by 1.5 feet each subsequent day.
To represent this information in equation form, we use the initial water level of 50 feet and subtract the total decrease over the given number of days:
L = 50 - (11.5 + 1.5 * (d - 1))
In this equation, "L" represents the water level, and "d" represents the number of days. By plugging in different values of "d," you can calculate the corresponding water level at any given day.