Interpreting nonlinear expressions — Harder example | Math | SAT | Khan Academy

Watch Sal work through a problem on understanding exponential function.

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[aqsashafiqrandhawa]

I think c option is corrected Sir because you're taking 4 year gap for each value

[aqsashafiqrandhawa]

Overall, the concept of that MCQ is not clear Sir

[mathewthomas]

Quarter year wouldn't be the answer because a quarter year is just 1/4 a year, or in other words, each quarter year would mean it's increasing 4 times each year or compounding 4 times each year.

[Phantom_slayer]

sir, if you just consider the value of (q) as =1, 2, 3... then we get the value is rising by 15 every time. so that means he is gaining 15 subscriber in every 3 months or quadrant year. if you just multiply 15 with 4 = 60 . so he gains 60 subscriber in a year . ANS(B)

kindly anyone correct my flaw, thank you.

[musicofhearts]

but if we see it is 1, 000 (1)^q/4 + 1, 000(0.06)^q/4 ....which becomes 6% rise every quarter year right?