Tim broke his piggy bank on the floor. Inside, there was a bunch of nickels, dimes, and quarters. After counting the change, he had $4.50. He has a total of 20 coins. How many nickels, dimes, and quarters are there going to be? Write a series of equations to represent this situation.

Hassan bought a package of tofu. the temperature of the tofu was 14° celsius when hassan put the package into the freezer. he left the tofu in the freezer until it reached –19° celsius. which expressions explain how to find the change in temperature, in degrees celsius, of the package of tofu? select three that apply.