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What is the value of the expression [tex]$45x - 16$[/tex] if [tex]$x$[/tex] is equal to [tex][tex]$-6$[/tex][/tex]?

A. [tex]$-990$[/tex]
B. [tex]$-450$[/tex]
C. [tex][tex]$-254$[/tex][/tex]
D. [tex]$-286$[/tex]


Sagot :

To determine the value of the expression [tex]\( 45x - 16 \)[/tex] when [tex]\( x \)[/tex] is equal to [tex]\(-6\)[/tex], follow these steps:

1. Start with the given expression:
[tex]\[ 45x - 16 \][/tex]

2. Substitute the given value of [tex]\( x \)[/tex], which is [tex]\(-6\)[/tex], into the expression:
[tex]\[ 45(-6) - 16 \][/tex]

3. Perform the multiplication [tex]\( 45 \times (-6) \)[/tex]:
[tex]\[ 45 \times (-6) = -270 \][/tex]

4. Now the expression becomes:
[tex]\[ -270 - 16 \][/tex]

5. Perform the subtraction:
[tex]\[ -270 - 16 = -286 \][/tex]

Therefore, the value of the expression [tex]\( 45x - 16 \)[/tex] when [tex]\( x \)[/tex] is [tex]\(-6\)[/tex] is:
[tex]\[ -286 \][/tex]

So, the correct answer is:
[tex]\[ \boxed{-286} \][/tex]