Write the proportion.20 is to 15 as 4 is to 3.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Answer: C
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Solve. Assume the exercise describes a linear relationship.The total sales made by a salesperson was $25,000 after 3 months and $68,000 after 23 months. Find an equation relating time and sales. Use the equation to predict the total sales after 42 months.
A. $108,950 B. $108,892 C. $108,820 D. $108,850
Multiply.(x + 5)(x2 - x + 7)
A. x3 + 4x2 + 2x + 35 B. x3 + 4x2 + 35 C. x3 + 6x2 + 12x + 35 D. x3 + 35
Find an equation of a parabola that satisfies the given conditions.Vertex (5, -4), focus (5, 1)
A. 20(y + 4) = (x - 5)2 B. x + 5 = 20(y + 4)2 C. y + 4 = 20(x + 5)2 D. 20(y - 4) = (x + 5)2
Solve the problem.In a survey of 50 hospital patients, 24 said they were satisfied with the nursing care, 17 said they were satisfied with the medical treatment, and 5 said they were satisfied with both. How many patients were satisfied with neither? How many were satisfied with only the medical treatment?
A. 14; 17 B. 19; 12 C. 19; 17 D. 14; 12