After a dilation with a center of (0, 0), a point was mapped as (1, 4) → (4, y). A student determined y to be 16. Evaluate the student's answer. A.
The student is correct.
B.
The student incorrectly calculated the scale factor to be 4.
C.
The student incorrectly multiplied by the scale factor instead of adding it.
D.
The student incorrectly added the scale factor instead of multiplying by it.

Find dy/dx using implicit differentiation ln(20+e^xy)=y

Find the roots of the equation below. x^2 - 6 + 9 = 0

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297