Solve the problem.Find (f + g)(-4) when f(x) = x - 6 and g(x) = x + 2.
A. 0
B. -4
C. -16
D. -12
Answer: D
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Solve the problem.In the formula A = Iekt, A is the amount of radioactive material remaining from an initial amount I at a given time t and k is a negative constant determined by the nature of the material. A certain radioactive isotope has a half-life of approximately 900 years. How many years would be required for a given amount of this isotope to decay to 75% of that amount?
A. 299 yr B. 225 yr C. 374 yr D. 1800 yr
Provide an appropriate response.Solve the equation by writing the equation as a function and using a graphing calculator: 5(x - 2) = 6(x - 1)
Fill in the blank(s) with the appropriate word(s).
Write the phrase as a mathematical expression. Use x as the variable.The sum of a number and 15
A. 15x
B. x + 15
C. 
D. x - 15
Find the x-intercept(s) if they exist.x2 + 6x + 5 = 0
A. 
, - 
B. -1, -5
C. 1 , 5
D. 10, -5