It's +31.
if there's a minus next to a bracket you have to turn every operator the opposite inside that bracket
-(-31) = +31
<h3>
Answer: 56 minutes</h3>
1 hour = 60 minutes
The time values given, in minutes, are:
25, 55, 60, 94, and 46
going from monday to friday in that exact order
Add up the values, then divide by 5. This is because there are 5 values
So adding up the values gets us: 25+55+60+94+46 = 280
Then dividing by 5 leads to this answer: 280/5 = 56
note: you must convert the "1 hour" to "60 minutes" because each time value must be in the same units. Otherwise, its like mixing apples and oranges which makes no sense.
Answer: 
Step-by-step explanation:
Given the polynomial 
, you can evaluate it for the given value of the variable "x" by substituting the value 
into the polynomial.
Therefore, when , you get the following result:
The average speed is the distance divided by the time.
Total distance:
12.8 miles + 17.2 miles = 30 miles
Total time:
noon - 9:00 a.m. = 3 hours
6:00 p.m. - 1:00 p.m. = 5 hours
Total time = 3 hours + 5 hours = 8 hours
average speed = 30 miles / 8 hours = 3.75 miles per hour
