A car traveled 496 miles in 8 hours how fast was the car traveling

What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?

Can someone me with 3 and 4 plz. this is for masteries test.

Suppose that a certain fortunate person has a net worth of $71.0 billion ($7.10×1010). if her stock has a good year and gains $3.20 billion (3.20×109) in value, what is her new net worth?