The distance between neptune and the sun is 30.06 au. what is this distance in millions of kilometers? (one au is about 150 million kilometers.) 450 million kilometers 450.9 million kilometers 4,000 million kilometers 4,509 million kilometers

30.06 AU x [ (150 million km)/(1 AU) ]

4,509 million km

Amath expression is a collection of one or more terms, which are separated by the signs ( + , - , x , / ).example :   8+b8+b  or  a−3a−3in algebra, an equation is a mathematical statement with two expressions where, each expression is separated by an equal (=) sign. variables can be present on both the sides of the equality (=) sign and we use letters to denote such variables.example 1:   x=4+2x=4+2  , [here, we can observe that the variable is present only on one side of the equation].example 2:   2x+3=x+42x+3=x+4  , [here, we can observe that the variables are present on both side of the equation].

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