To determine the approximate number of milliliters (mL) in 3 tablespoons (tbsp), you need to use the conversion factor that relates milliliters to tablespoons. The conversion factor given is that 1 tablespoon is approximately equal to 15 milliliters.
Here's a step-by-step breakdown to find the correct expression:
1. Identify the conversion factor: You are given that 1 tbsp = 15 mL.
2. Set up the expression: To convert tablespoons to milliliters, you multiply the number of tablespoons by the conversion factor.
- You have 3 tablespoons.
- The conversion factor is [tex]$\frac{15 \text{ mL}}{1 \text{ tbsp}}$[/tex].
3. Write the expression: Multiply the number of tablespoons (3 tbsp) by the conversion factor ([tex]$\frac{15 \text{ mL}}{1 \text{ tbsp}}$[/tex]):
[tex]\[
3 \text{ tbsp} \times \frac{15 \text{ mL}}{1 \text{ tbsp}}
\][/tex]
4. Simplify the units: The tablespoons (tbsp) in the numerator and denominator cancel each other out:
[tex]\[
3 \times 15 \text{ mL}
\][/tex]
5. Calculate the result: Finally, perform the multiplication:
[tex]\[
3 \times 15 = 45 \text{ mL}
\][/tex]
So, the correct expression to find the approximate number of milliliters in 3 tablespoons is:
[tex]\[
3 \text{ tbsp} \times \frac{15 \text{ mL}}{1 \text{ tbsp}}
\][/tex]
