Determine whether the function has an inverse function. If it does, find the inverse function.
f(x) = x2 + 5
A. 
B. 
C. 
D. 
E. No inverse function exists.
Answer: E
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Factor the sum or difference of two cubes.a3b3 + 343
A. (ab + 7)(a2b2 - 7ab + 49) B. (ab - 7)(a2b2 + 7ab + 49) C. (ab - 7)(a2b2 + 49) D. (ab + 7)(a2b2 - 49)
Estimate the sum or difference by first rounding to the nearest ten.64
A. 160 B. 158 C. 200 D. 150
Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.x - y + z = 2x + y + z = -4x + y - z = 0
A. (-2, 1, -3) B. (1, -2, -3) C. (1, -3, -2) D. No solution
Solve.Maha checked the outside temperature at noon one day and found it was 26° C. At 10 PM when he checked, the outside temperature was 20° C. How much, in degrees Fahrenheit, did the temperature drop between noon and 10 PM? Round your answer to the nearest tenth.
A. -21.2° B. -10.8° C. 3.33° D. 10.8°