Asimilarity transformation maps ∆abc to ∆jkl. the measure of ∠a of preimage ∆abc is 105°. the scale factor of the dilation in the similarity transformation is 1.5. if ∠a in the preimage corresponds to ∠j in the image, what is m∠j? a. 70° b. 140° c. 105° d. 35°

The $x$-intercepts of the parabola $y = x^2 + bx + c$ are $(-3,0)$ and $(5,0).$ find the equation of the parabola, and submit your answer in $y = ax^2 + bx + c$ form.

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

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