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The total revenue in Rupees received fro...

The total revenue in Rupees received from the sale of x units of a product is given by `R(x)=3x^2+36 x+5`. The marginal revenue, when `x = 15`is (A) 116 (B) 96 (C) 90 (D) 126

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We have `R(x)=3x^2+36x+5`
`implies` Marginal revenue(MR)=`(dR(x))/dx=6x+36`
Thus at `x=15`,Marginal revenue=`6(15)+36=126`
Option `D` is correct
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NCERT ENGLISH-APPLICATION OF DERIVATIVES-EXERCISE 6.1
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  2. A balloon, which always remains spherical, has a variable diameter 3/...

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  3. The radius of an air bubble is increasing at the rate of 0.5 cm/sec...

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  4. A particle moves along the curve 6y = x^(3)+2. Find the points on th...

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  5. A ladder of length 5 m is leaning against a wall. The bottom of ladde...

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  6. The rate of change of the area of a circle with respect to its radius...

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  7. The total revenue in Rupees received from the sale of x units of a pr...

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  8. The total cost C (x) in Rupees associated with the production of x uni...

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  9. Sand is pouring from a pipe at the rate of 12 c m^3//s . The falling s...

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  10. An edge of a variable cube is increasing at the rate of 3cm per second...

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  11. A stone is dropped into a quiet lake and waves move in circles at the ...

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  12. The radius of a circle is increasing at the rate of 0.7 cm/s. What is...

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  13. The length x of a rectangle is decreasing at the rate of 5 cm/minute ...

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  14. Find the rate of change of the area of a circle with respect to its r...

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  15. The volume of a cube is increasing at the rate of 8 c m^3//s. How fast...

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  16. The radius of a circle is increasing uniformly at the rate of 3 cm/s....

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  17. A balloon, which always remains spherical on inflation, is being infl...

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  18. A balloon, which always remains spherical, has a variable radius. Fin...

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