14. Which of the following expression is written in the standard form of linear equations in one variable?
a. X+6=0
b. 3y - 8 = 0
c. 62- = 0
d. all of the above

15. A linear equation in one variable has a maximum of one variable with a highest power of ____.
a. 1
b. 2
c. 3
d. 4

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