This morning I went to Larry's for breakfast. I ordered the following:

two eggs, bacon, hash browns, tea

My total bill (before taxes) was $8.50.

If sales tax is 8%, how much is my total cost, including the food bill plus the tax?

Zoe placed colored blocks on a scale in science class. each block weighed 0.8 ounces. the total weight of all the colored blocks was 12.8 ounces. how many blocks did zoe place on the scale? write and solve an equation to find the answer.

(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?

How can you check that you have correctly converted frequencies to relative frequencies?