Select the correct answer. What is the expanded equivalent of cos(a – b)? A. sin a cos b – cos a sin b
B. sin a cos b + cos a sin b
C. cos a cos b – sin a sin b
D. cos a cos b + sin a sin b

Consider the function f(x)=−2/3x+5 . what is f(1/2) ? enter your answer, as a simplified fraction, in the box. f(1/2)=

Draw a tape diagram to represent each situation. for some of the situations, you need to decide what to represent with a variable andre bakes 9 pans of brownies. he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55