Evaluate the function for the given values of a and b. Then use the intermediate value theorem to determine which of the statements below is true.a = 1, b = 3f(x) = x4 - 7x3 + 11x2 + 10x + 18
A. f(1) and f(3) have opposite signs, therefore f has a real zero between 1 and 3.
B. f(1) and f(3) have opposite signs, therefore f does not have a real zero between 1 and 3.
C. f(1) and f(3) have the same sign, therefore f does not have a real zero between 1 and 3.
D. f(1) and f(3) have the same sign, therefore the intermediate value theorem cannot be used to determine whether f has a real zero between 1 and 3.
Answer: D
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A. 
B. 
C. 
D. - 
Divide and, if possible, simplify.
A. 2a20z35 
B. 2a4z7
C. 2a20z35
D. 2a15z30 
Write an algebraic expression for the specified quantity.A merchant has light roast coffee worth $3.50 a pound that she wishes to mix with dark roast coffee worth $6.99 a pound. Let x = the number of pounds of dark roast coffee in a 80-pound mixture of light roast coffee and dark roast coffee. Write an algebraic expression in x for (i) the number of pounds of light roast coffee in the 80-pound mixture; (ii) the value of the dark roast coffee in the 80-pound mixture; (iii) the value of the light roast coffee in the 80-pound mixture.
A. (i) 80 - x (ii) $6.99(80 - x) (iii) $3.50x B. (i) 80 + x (ii) $6.99x (iii) $3.50(80 + x) C. (i) 80 + x (ii) $6.99(80 + x) (iii) $3.50x D. (i) 80 - x (ii) $6.99x (iii) $3.50(80 - x)
Tell whether the angle is acute, right, obtuse, or straight.
A. Right B. Obtuse C. Acute D. Straight