When you convert from a large unit such as pounds or minutes to a smaller unit as ounces or seconds why do you use multiplication

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2

Eliza wants to make $10,000 from her investments. she finds an investment account that earns 4.5% interest. she decides to deposit $2,500 into an account. how much money will be in her account after 14 years?