Paula is working on her English essay. She already has 150 words written and has planned out the rest. Paula's essay must be 3,000 words in length, and she types at a rate of 38 words per minute.

Which equation represents the number of words in her essay, and how many minutes, m, will it take Paula to complete it?

a) 38m - 150 = 3,000; m = 75 minutes
b) 38m - 150 = 3,000; m = 83 minutes
c) 38m + 150 = 3,000; m = 75 minutes
d) 38m + 150 = 3,000; m = 83 minutes