Solve the equation by completing the square.6x2 + 3x = 3
A. 
, -1
B. 2, 1
C. 2, -1
D. 2, 0
Answer: A
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Solve the system by graphing.-3 = 3x - yy = 3x
A. (0, -3) B. (-3, 0) C. No solution D. Infinitely many solutions
Find functions f and g so that h(x) = (f ? g)(x).h(x) = 
A. f(x) = 2, g(x) = 
B. f(x) = 
, g(x) = 2
C. f(x) = 2/
, g(x) = 10x + 5
D. f(x) = 2/x, g(x) = 10x + 5
In this problem, cost, revenue, and profit are in dollars and x is the number of units. Suppose that the total revenue function is given by src="https://sciemce.com/media/3/ppg__cognero__Chapter_09_Derivatives__media__c8d839c1-b79b-4fed-81cd-34d4650bedd8.PNG" class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_7dd24da295d64e7ea8b6ffb1c" />, and explain what this value represents. Round your answer to two decimal places.
?
A. 84.88. The sale of the 101st unit will increase profit by $84.88.
B. 84.88. The sale of the 101st unit will decrease profit by $84.88.
C. 84.75. The sale of the 101st unit will increase profit by $84.75.
D. 85.00. The sale of the 101st unit will increase profit by $85.00.
E. 85.00. The sale of the 101st unit will decrease profit by $85.00.
, and that the total cost function is given by 
. Find
Describe the situation with a linear inequality and then solve the inequality.When making a long distance call from a certain pay phone, the first three minutes of a call cost $1.60. After that, each additional minute or portion of a minute of that call costs $0.25. Use an inequality to find the number of minutes one can call long distance for $5.85.
A. ? 23 minutes B. ? 4 minutes C. ? 20 minutes D. ? 17 minutes