Sure. We have
and
so the midpoint M is

Choice B
Answer: 
Step-by-step explanation:
The exponential function will have this form:

We know that the function passes through the points
and
. Then, we can substitute the coordinates of the point
into
and solve for "a":

Then, we know that:

Now, we neeed to substitute the coordinates of the second point
into
and solve for "b":

Substituting the value of "b" into
we can find "a":

Therefore, we get that the exponential function that describes the graph, is:

5 cans for $10 is $2 per can
1 can is $2.20
5 cans for $10 is the better deal
Answer:
See below
Step-by-step explanation:
z = uncle's age
1/2z +3 = Sam's age