The concentration of a certain drug in the bloodstream t minutes after swallowing a pill containing the drug can be +1)-1/2, where C(t) is the concentration in arbitrary units and t is in minutes. Find the rate of change of concentration with respect to time at t = 12 minutes. approximated using the equation C(t)= units/min O 2 3067 units/min O units/min O units/min 6174

Blake and April are both taking AP Calculus, but they have different teachers who have two different grading systems. Blake is in Mr. Frey’s class and April is in Coach Smith’s class. Blake is mad because she thinks that with her averages, she would have a higher average in Coach Smith’s class. Given her averages below, what would be her overall average for each class? Round to the nearest whole number. Mr. Frey’s Class (Blake) Coach Smith’s Class (April) Test 35% Quiz 20%Homework 10% Classwork 15%Final Exam 20% Test 45%Quiz 20%Homework 10% Classwork 10%Final Exam 15%   Test Quiz HW CW Final Exam 84 75 90 85 90 Blake’s grade with Mr. Frey Blake’s grade with Coach Smith

A teacher has 5 students. She wants to pick three students and send them home. How many options she has.

Nick's science test has a section with 12 multiple choice questions, with five choices A, B, C, D, and E. How many different ways can Nick answer these questions? show setup and solution