1) Considering that "the product of a quarter of 3 more than a number a" can be written as:
[tex]\begin{gathered} \frac{1}{4}\times3+a \\ \\ \frac{3}{4}+a \end{gathered}[/tex]2) And for the second statement: "2 times a number b" can be written as:
[tex]2b[/tex]We can write them both as:
[tex]\begin{gathered} \frac{3}{4}+a \\ 2b \end{gathered}[/tex]