Average rate of change means find the slope of the secant line. So if there is a function f(x) and you want to find the average R.O.C over the interval [a,b], it would be (f(b)-f(a))/(b-a)
1. (f(3)-f(1))/(3-1)= (0-(-2))/2= 1, so D.
2. Same concept; (8-4)/(3-1)=2, so A.
3. Again, (39-(-1))/5= 8, B.
Answer:
8.5 inches
Step-by-step explanation:
First let's find the time t when the depth of the snow is 7 inches.
To do this, we just need to use the value of D = 7 then find the value of t:



We want to find the depth of snow one hour from now, so we just need to use the value of t = 3 to calculate D:


The depth of snow one hour from now will be 8.5 inches.
Answer:
1/8x ... -1 would be the y intercept so 1/8x is the slope
Use a all called math w.a.y (remove the periods) trust me it helps with at least 75% of math problems