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What is the value of this expression when [tex][tex]$t = -12$[/tex][/tex]?

[tex]-3|t-8|+1.5[/tex]

A. 61.5
B. 13.5
C. -10.5
D. -58.5


Sagot :

Let's break down the expression and determine its value when [tex]\( t = -12 \)[/tex].

The expression given is:
[tex]\[ -3 |t - 8| + 1.5 \][/tex]

First, substitute [tex]\( t = -12 \)[/tex] into the expression:
[tex]\[ -3 |-12 - 8| + 1.5 \][/tex]

Calculate inside the absolute value:
[tex]\[ t - 8 = -12 - 8 = -20 \][/tex]

The absolute value of [tex]\(-20\)[/tex] is:
[tex]\[ |-20| = 20 \][/tex]

Next, multiply this by [tex]\(-3\)[/tex]:
[tex]\[ -3 \times 20 = -60 \][/tex]

Finally, add 1.5 to the result:
[tex]\[ -60 + 1.5 = -58.5 \][/tex]

So, the value of the expression when [tex]\( t = -12 \)[/tex] is [tex]\(-58.5\)[/tex].

Thus, the correct answer is:
D. -58.5