Blood urea nitrogen (BUN) is a measure of the amount of urea in the blood (R). It provides useful information about your health. The liver produces urea as a waste product of the digestion of proteins (R, R). Urea is a safe vehicle to get rid of excess nitrogen from the body.
Algebra is important for future employment opportunities in Californiaâs increasingly knowledge-based economy, even in jobs con-sidered to be âblue collar.â For example, an applicant must have passed Algebra I to enter an electrician apprenticeship program. But if students are aiming for college, algebra is essential.
Pre-Algebra is a common name for a course in middle school mathematics. In the United States, pre-algebra is usually taught in the 7th grade. The objective of pre-algebra is to prepare the student for the study of algebra. Pre-algebra includes several broad subjects: 1  Review of natural number arithmetic. 2  New types of numbers such as integers, fractions, decimals and negative numbers.