What is the equation of the line that passes through (3,5) and is parallel to y=2x+6

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?

If you answer 2+2 you will get over 80 points

The graph below shows the height of a projectile t seconds after it is launched. if acceleration due to gravity is -16 ft/s2, which equation models the height of the projectile correctly?