Hi, you seem to have misunderstood/misread the question. The question is not asking for the exact value, it is asking for the best answer. You have arrived at 3^11 = 5^q - 5^28 instead of 3^11 ~ 5^q - 5^28 which can be further simplied to 3^11 ~ 5^28[(5^(q-28))-1] Now, by examining the answer choice...

Ben, i would like to know why it is necessary to have two unique points. My understanding... To determine whether two lines are perpendicular, we need to see if the product of the gradients equals -1, say m 1 *m 2 = -1 Now all we need to determine the gradient of any line is two points on the line.....

Hi, I am confused as to whether i should treat "a number of" as a plural or singular subject. For example, consider the following sentences: There are a number of people in the stadium There are a number of reasons for me to get an MBA Can i replace the verb "are" with "is&q...