Solve the problem.A number is 12 less than its square. Find all such numbers.
A. -4 and 3
B. -3 and 3
C. -4 and 4
D. -3 and 4
Answer: D
Mathematics
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The concentration D of a drug, in milligrams per deciliter, in the blood t hours after an injection is given by 
. What is the eventual concentration of the drug in the blood?
A. About 4.07 milligrams per deciliter B. About 8.68 milligrams per deciliter C. About 4.61 milligrams per deciliter D. 0 milligrams per deciliter
Mathematics
Find the y-intercept of: y= -4x²+ 8x- 3
What will be an ideal response?
Mathematics
Find the equations of the system shown on the graphing calculator screen.10
-10
A. 5x + y = 7 x + 2y = -1 B. x + y = 1 x - 3y = -9 C. 3x - y = 9 5x + y = 7 D. 3x + y = 9 5x - y = 7
Mathematics
Solve the system of equations by substitution.
A. (7, 0) B. (0, -7) C. (1, -8) D. no solution
Mathematics