Evaluate this expression
42 86-23 42
A: 14.41
B: 19.44
C: 21.62
D: 22.04
To evaluate the expression, we follow the order of operations (PEMDAS): Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).
The expression does not contain any parentheses, exponents, or multiplication/division, so we can proceed with addition and subtraction.
42 + 86 = 128
128 - 23 = 105
105 + 42 = 147
So, the expression evaluates to 147.
None of the given answer choices, A, B, C, or D, matches the result of 147.