Answer:
[tex]15r^2-14r-8[/tex]
Step-by-step explanation:
The given expression is [tex](5r+2)(3r-4)[/tex]
Using the FOIL to multiply.
[tex]5r\cdot3r+2\cdot3r-5r\cdot4-2\cdot4[/tex]
Now, on multiplying
[tex]15r^2+6r-20r-8[/tex]
Combine the like terms
[tex]15r^2-14r-8[/tex]
Therefore, D is the correct option.