Is 'when' justified?

Is the use of 'when' in the non-underlined portion justified?
'When' is used to describe/indicate a time frame.

Wouldn't 'If' provide a better construction in this sentence?

Please provide reasons for your choice!

Proper uses of phrases including 'which'

Each year, thousands of salmon swim to spawn up the rivers of Maine,only a few of which are genetically recognizable descendants of the salmon that swam up the same rivers centuries ago. a. Same as underlined b. spawn by swimming up the rivers of Maine, only a few of which c. swim up the rivers of M...

A Manhattan Cat question.

Spanish guitarist and composer Andres Segovia led the twentieth-century revival of the classical guitar, which was not considered sufficiently prestigious enough to be a concert instrument . Segovia led the twentieth-century revival of the classical guitar, which was not considered sufficiently pres...

I think the answer should be D. The whole passage talks about advertisement expenses. The two advertisement type discussed are television advertisement(traditional advertisement/traditional advertisement outlet)and the internet based advertisement. The passage also discusses which is better in the s...

I have a very basic way to solve this. 0 is straight away out as explained by Brent above. now to find least possible value of x + 4/x lets equate it to each answer choice. So, x + 4/x = 1 ; x^2 + 4 = x ; x^2 - x + 4 =0 _____ (1) similarly, equation with 2, 3 and 4 you get, x^2 -2x + 4 = 0 _____(2) ...

√{3√80 + 3/(9+4√5)} = ? If the answer choices are sufficiently different, we can ballpark the answer quickly: √(3√80 + 3/(9+4√5)) ≈ √(3*9 + fraction) ≈ √27 ≈ 3√7. Hi Mitch, I didn't understand how did you get to the step in bold red above. Just to correct √27 = 3√3

Manhattan Gmat problem

√{3√80 + 3/(9+4√5)} = ?