Answer:
See attachment
Step-by-step explanation:
The given inequality is

We multiply both sides by -2 and reverse the inequality sign to get:


We draw an open circle at 32 and draw an arrow to the right as shown in attachment.
Answer:
Foil the expression and solve the derivative with respect to b at f'(x)=0
Step-by-step explanation:
For this question, we want to find out the greatest amount of area of pizza for the least amount of money:
So we have two pizzas with a 10 in. diameter. Let us take one of those pizzas.
The formula for area of a circle is

; So the area for one of these 10 in. pizzas would be

or 25

.
We have two of these pizzas, so the total area that we would get with $14 would be 25

*2 or 50

.
For the second case, we have one pizza with a 14 in. diameter.
The area of this pizza will be

or 49

.
So for $15 we can buy 49

worth of pizza.
The best deal would be to buy the two medium pizzas of 10 inch diameter, because for $14, you get 50

.