Answer: the price of each CD before tax is $14.9
Step-by-step explanation:
Let x represent the price of each CD before tax.
Abdul bought 3 CDs that were each the same price. It means that the total cost of the 3 CDs before tax is $3x.
Including sales tax, he paid a total of $47.40. Of that total, $2.70 was tax. It means that
3x + 2.7 = 47.4
3x = 47.4 - 2.7
3x = 44.7
x = 44.7/3
x = 14.9
the price of each CD before tax is $14.9
Irrational Number:A number that cannot be expressed as a ratio between two integers and is not an imaginary number.
Rational Number: a rational number is any number that can be expressed as the quotient or fraction
Answer: The FACTOR THEOREM: polynomial of degree n>0 and f(c)=0, then x−c is a factor of the polynomial f(x). Further, if x−c is a factor, then c is a zero of f.