The rules which tell which caculations are done before others in an expression

This rule is known as PEMDAS

In an algebraic equation follow PEMDAS

P= first calculate anything with parantheses

E= then calculate anything with exponents

M= calculate any multiplication

D= calculate any division

A= calculate any addition

S= calculate any subtraction

you must do these in that order

hope this helps:)

choice b is correct

step-by-step explanation:

we have been given the following system of inequalities;

we are required to graph the solution to the system of inequalities. using a graphing tool, the graph of the system is as shown in the attachment. the continuous line represents the graph of while the dotted line represents .