Answer: f(3)=11.5
Step-by-step explanation:
In order to solve this equation, all you have to substitute the value inside of the parenthesis with the value of x in the equation after the equals sign. SO...
f(3)=3x+2.5
f(3)=3(3)+2.5
f(3)=9+2.5
f(3)=11.5
Hope this helps!
Answer:
Please, see the image below.
Step-by-step explanation:
I attached an image of the sketched region below.
You take into account that y=0 is the x axis.
Furthermore, you take into account that f(x)=-5x^3 is, for x=-2 and x=-1:
f(-2)=40
f(-1)=5
Finally, the region bounded by the equations is above the negative x axis.
Your question: Find D in | - 2d|<10
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SOLVING....
Solve the absolute value
|−2d| < 10
=
−2d < 10
or
−2d > −10
Solve −2d < 10 for D
Divide each side by -2
-2d ÷ -2 < 10 ÷ -2
d > -5
Now Solve −2d > −10
Divide each side by -2
-2d ÷ -2 > -10 ÷ -2
d < 5
So D is d < 5 and d > -5