The answer is the third option.
The explanation is shown below:
1. You must keep on mind the information given in the exercise:
- She bough 3 pounds of coffee.
- She bought 2 pounds of chocolate.
- She spent a total of $24.
2. Therefore, you can call the price per pound of coffee
and the price per pound of chocolate
.
3. When you multiply 3 pounds by the price per pound of coffee, you obtain the amount of money she spent for 3 pounds. When you multiply 2 pounds by the price per pound of chocolate, you obtain the amount of money she spent for 2 pounds. If you add both amounts, you obtain the total spent, which was $24.
4. Therefore, you can express this as following:

Answer:
r = √(A/π)
Substitute area into "A", then solve:
Divide A by π, then find the square root of that number.
Explanation:
With the area of a circle, you can find the radius by rearranging its formula.
Area of a circle: A = πr²
<u>Rearrange the formula to isolate "r"</u>.
A = πr²
A/π = πr²/π Divide both sides by π
A/π = r² π divided by π cancels out on the right
√(A/π) = √r² √ both sides to cancel out ²
√(A/π) = r Write "r" on the left for standard formatting
r = √(A/π) Formula for find radius
If you have the area, use this formula.
- Substitute "A" with the area.
- Divide A by π
- Find the square root of that number
Answer:
the answer will be 30...................