How do you find the lateral surface area of a cone ?

Which equation and solution can be used to solve this problem? thirteen less than a number is sixteen. 13-n=16: add 13 to both sides. the answer is 29. n+13=16: subtract 13 from both sides. the answer is 3. n+16=13 subtract 13 from both sides. the answer is 3. n-13=16: add 13 to both sides. the answer is 29.

Is the power produced directly proportional to the wind speed, give reasons for your answer?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x