Answer:
B) 7b
Step-by-step explanation:
1. Write the equation to solve
[tex]\frac{a}{b}=\frac{7}{2}[/tex]
2. Solve for a:
[tex]a=\frac{7b}{2}[/tex]
3. Multiply both sides by 2 to obtain the value of 2a:
[tex]2a=2*(\frac{7b}{2})[/tex]
4. Solve the equation:
[tex]2a=\frac{14b}{2}[/tex]
[tex]2a=7b[/tex]