Evaluate the expression.3-2
A. -9
B. 9
C. 
D. 
Answer: C
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For the given function expressed verbally, give a graphical representation. Bob buys a car that gets 9 miles per gallon of gasoline. Give a representation to compute the number of miles, y , that Bob can travel with x gallons of gasoline. Let 0?x?10.
A. 
B. 
C. 
D. 
Factor, using the given factor. Assume all variables represent positive real numbers.x-7 - 7x-4; x-7
A. x-7(1 - 7x3) B. x-7(x - 7x4) C. x-7(1 + 7x5) D. x-7(x - 7x3)
Find the exact value of the expression if ? = 30°. Do not use a calculator.g(?) = sin ?Find 
.
A. 
B. 
C. 
D. 12
Fifty percent of students enrolled in an astronomy class have previously taken physics. Thirty percent of these students received an A for the astronomy class, whereas twenty percent of the other students received an A for astronomy.Find the probability that a student selected at random previously took a physics course and did not receive an A in the astronomy course.
A. 0.35 B. 0.40 C. 0.15 D. 0.10 E. none of these