Answer: Serena needs [tex]\frac{21}{8}\ yd[/tex] (or [tex]2.625\ yd[/tex]) of fabric.
Step-by-step explanation:
You need to analize the information provided in the exercise.
You know that Serena has [tex]\frac{7}{8}[/tex] yards of fabric, but she need 3 times that amount.
This indicates that, in order to calculate the amount of yards Serena need to complete her craft project, you need to multiply the amount of fabric she has by 3:
[tex](\frac{7}{8}\ yd)(3)[/tex]
In order to find the product you must multiply the numerator of the fraction by 3. Then, you get:
[tex](\frac{7}{8}\ yd)(3)=\frac{(7)(3)}{8}=\ yd=\frac{21}{8}\ yd[/tex]
Therefore, Serena needs [tex]\frac{21}{8}\ yd[/tex] (or [tex]2.625\ yd[/tex]) of fabric.
