A motorist took 3.5 h to travel 210 km what was his averqge speed in km/m​

What is the difference between the points (4, 7) and (4, -5)? a. 0 units b. 2 units c. 4 units d. 12 units

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters