Yeah The Answer Would Be A=299
-100+x^4, adding a negative is the same as subtracting, hope this helps. :)
Answer:
$20.00
Step-by-step explanation:
600 ÷ 30 = 20

Differentiate both sides with respect to

:

When

, you have

For part (b), we now assume that

and

are functions of an independent variable, which we'll call

(for time). Now differentiating both sides with respect to

, we have

where the chain rule is used on the right side. We're told that

is decreasing at a constant rate of 0.1 units/second, which translates to

. So when

, you have



where the unit is again units/second.
Answer: 3944
All you have to do is multiply 58 x 68 to get the answer.
( hope this helped! )