four students worked together on a science project for the annual district science fair. the students spent four months working on the project. it was decided that at the science fair the students would each speak on one of the following topics: Introduction and Hypothesis Methodology Data Conclusion However the students were unable to determine which category each of them would present. they decided to draw lots to make the decision. use the table below to record the core of each student.

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

i think it will be zero as slope has a formula of difference between initial and final distance divided by itz time interval