Question

Justin is evaluating the expression 12.5 + 3.8 x, when x is 7.9. 12.5 + 3.8 (7.9). 16.3 (7.9). 128.77. What was Justin's error? Justin should have multiplied 12.5 and 7.9 first. Justin should have added 12.5 and 7.9 first. Justin should have multiplied 3.8 and 7.9 first. Justin should have added 3.8 and 7.9 first.

Answer 1

Answer: (C) Answer: Justin should have multiplied 3.8 and 7.9 first.

Step-by-step explanation: Read person above(just making sure it's correct)

Answer 2

Answer: Justin should have multiplied 3.8 and 7.9 first.

Explanation:

Given the equation

12.5 + 3.8x

where, x = 7.9, the first thing that Justin's should have done was to multiply 3.8 and 7.9 first. This will be:

= 12.5 + 3.8x.

= 12.5 + 3.8(7.9)

= 12.5 + 30.02

= 42.52