Question

Evaluate –x + 3.9 for x = –7.2. A. –3.3 B. –11.1 C. 11.1 D. 3.3

Answer 1

Answer:

11.1

C is the correct option.

Step-by-step explanation:

We have been given the equation $-x+3.9$ and we have to evaluate this expression for $x=-7.2$

In order to find the same, we can substitute x = -7.2 in the expression

$-(-7.2)+3.9$

Now, we know the rule (-)(-)=+

$7.2+3.9$

On adding, the numbers, we get

$=11.1$

Hence, the value of the expression at x = -7.2 is 11.1

C is the correct option.

Answer 2

C because since X in the equation is negative the negative value for x will cancel and 7.2 becomes positive. there fore 7.2+3.9=11.1