Question

Evaluate the expression for the given quantity. -9.8t + 20t + 8 for t = -2, 0, 3.5

Answer 1

Answer:

Replace the variable t    with  −

2  

in the expression.  3.5

Step-by-step explanation:

-9.8t+20t+8t=-2,0,3.5

-9.8t+20t+8t=-2        18.2t=-2

=03.5       18.2=t-2

Answer 2

Answer:

-12.4, 8 and 43.7.

Step-by-step explanation:

The given expression is

$-9.8t+20t+8$

And we have to evaluate it for $t=-2$, $t=0$ and $t=3.5$.

To evaluate we just need to replace each t-value into the polynomial.

For $t=-2$, we have

$-9.8t+20t+8=-9.8(-2)+20(-2)+8=19.6-40+8=-12.4$

For $t=0$, we have

$-9.8t+20t+8=-9.8(0)+20(0)+8=0+0+8=8$

For $t=3.5$ we have

$-9.8t+20t+8=-9.8(3.5)+20(3.5)+8=-34.3+70+8=43.7$

Therefore, the result for each t-value is, respectively, is -12.4, 8 and 43.7.