Gaira was asked to evaluate the algebraic
expression –3.8x + 6 when x = –7.5.

–3.8(–7.5) + 6(–7.5)

28.5 + (–45)

(–16.5)

What mistake did she make

Respuesta :

The mistake she made was multiplying the 6 by the -7.5 as there is no x after the 6

Answer:  Gaira made a mistake when substituting the value –7.5 in for x.  She multiplied both terms of the expression by –7.5 when she should  have only multiplied –3.8 by –7.5. The correct answer is 34.5.

Step-by-step explanation:

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