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Anonymous Anonymous
  • 07-02-2017
  • Mathematics
Answered

What is the value of the expression 4(80 + b) − 12, where b = 20?

Answer Options with 4 options

A328
B352
C388
D412

Verified Answer :

goldhead goldhead
  • 07-02-2017

Answer is C => 4(80+20)-12 => 4(100)-12 =>400-12 => 388

Answer Link
kathryntaylor kathryntaylor
  • 07-02-2017

PEMDAS: parenthesis exponents multiply divide add subtract from left to right in order to operate - subsitute b for 20 {4(80+20)-12} . Then you move to parentheses so {4(100)-12}. There are no exponents so move to multiply {400-12}. No division and no addition so finally subtracts ANSWER: 388

Answer Link

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