Mark had a balance of −$11
in his checking account. The bank charged a $25 fee. What is the balance in the account?(1 point)
The balance in the account is $ ___
The water level of a river is below normal levels. Its water level is at 1 1//2
meters below sea level. During the summer, the river drops another 2 1/3
meters below sea level. What is the water level at the end of summer? Remember, the elevation is below sea level. Account for this in your answer.(1 point)
The water level is ___ meters below sea level.
Which context describes a difference of rational numbers?(1 point)
Responses
finding the average of daily high temperatures
finding the average of daily high temperatures
comparing the daily high temperature and low temperature
comparing the daily high temperature and low temperature
recording the temperature hourly
recording the temperature hourly
determining the coldest temperature in a month
comparing the daily high temperature and low temperature
Which scenario about books represents finding the difference?(1 point)
Responses
finding the total number of books in a store when new books arrive
finding the total number of books in a store when new books arrive
finding the number of books remaining after a sale on books
finding the number of books remaining after a sale on books
finding the type of books in a store
finding the type of books in a store
finding the location of a book in a store
finding the number of books remaining after a sale on books
The rainfall in a town was 2.3 inches above normal in June. In July, the rainfall was 1.2 inches below normal. What was the difference in rainfall between the months?(1 point)
The difference in rainfall was
inches.
To find the balance in Mark's account, we need to subtract the $25 fee from his initial balance of -$11.
Negative numbers represent debt or money owed, so -$11 implies that Mark owes $11 to the bank. Adding or subtracting a negative number is equivalent to subtracting or adding its positive counterpart.
So, we can find the balance by performing the following calculation:
-$11 - $25
To subtract two numbers, we can simply add their negatives. Thus, we can rewrite the calculation as:
-$11 + (-$25)
Combining the negative signs and adding the two numbers gives us:
-$36
Therefore, the balance in Mark's account is -$36.
Note that negative balances in bank accounts represent debts or overdrafts — in this case, Mark owes $36 to the bank.
The balance in the account is -$11 - $25 = -$36.
The water level at the end of summer is 1 1/2 - 2 1/3 = (3/2) - (7/3) meters below sea level. To subtract these fractions, we need to find a common denominator, which is 6. So we have (9/6) - (14/6) = -5/6 meters below sea level.
Therefore, the water level at the end of summer is 5/6 meters below sea level.