f(x)=3x. Solution: If we take ln in both side of this equation and differentiate it, we get lnf(x)=ln3x. ∴ lnf(x) = xln 3. ∴ d dx. (lnf(x)) = d dx. (xln 3).

5 0

3 years ago

3. A catering service paid $520 for 10 center pieces and 60 glasses. The guest list grew, requiring an

ELEN [110]

Center piece was $40
Glasses were $2
I used the elimination method. I multiplied everything in the equation that represents the second order by five and subtracted it from the first orders equation. I then solved for y and got that each glass was $2. I then plugged the 2 back into the original equation to find that a centerpiece was $40.
(Attached)

8 0

3 years ago

5a²-4ab-b²/b²+7ab+10a²

Ray Of Light [21]

15a^2+3ab-1, I would explain my answer, however, I would get deleted for copying something else which is ridiculous.

6 0

3 years ago

A tv is $850. The sale for the tv was 20% off the original price but you can take an additional 15% off at the register

klasskru [66]

So from what I understand of the problem, the tv costs $850 at a discounted price of 20%. and other than the 20%, you can get an additional discount of 15% at the counter. So to solve this, you can just simply multiply 850 with 35% or 0.35. The answer to that will be $297.5. Now you then have to less this amount with 850. The final answer to that is 552.5. So after all the discounts that you have received from the store, then the final price that you can get for this tv set would be $552.5

4 0

3 years ago