We will assume that we have a function relating between the time and the temperature. Any point in this function can be expressed as (x,y) where x is the time and y is the temperature (any point is expressed as (time, temperature)).
We have two points given:
<span>At 7 p.m. the temperature is 72 degrees F: First point is (7,72)
</span><span>At 10 p.m. the temperature is 52 degrees F: Second point is (10,52)
The rate of change is simply the slope of this function, this slope can be calculated as:
rate of change = (y2-y1) / (x2-x2)
we have y2= 52, y1= 72, x2= 10 and x1= 7
Substituting in the equation, we can calculate the rate of change as follows:
rate of change = (52-72) / (10-7) = -6.667 degrees/hours
Note: The negative sign indicated a DECREASE in the temperature.</span>
3(-1.5)-5=
-4.5-5=
-9.5
3(2)-5=
6-5=
1
3(4)-5=
12-5=
7
{f(-1.5),f(2),f(4)} = {-9.5,1,7}
$1.20 is the answer because when you add it together and then divide the total by your answer you get that
Answer:
The number is 60
Step-by-step explanation:
Of is multiply and is means equals
20% * N = 12
Changing to decimal form
.20 N = 12
Divide by .20
.20N/.20 = 12/.20
N = 60
The number is 60
For 36 3 6 13. For 48 4 8 24. I think there are more but I can't think of them
