#### Answer

$3x^2$;
$5x$;
$21x$;
$35$

#### Work Step by Step

When using the FOIL method to find the product of $(x+7)(3x+5)$, the product of
the first terms is $x(3x) = 3x^2$;
outside terms is $x(5)=5x$;
inside terms is $7(3x) = 21x$;
the last terms is $7(5)=35$.