Decide whether the given number is a solution of the given equation.Is 8 a solution of 2(r + 9) = 25?
A. yes
B. no
Answer: B
Mathematics
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Find the inverse of the function.f(x) = 
A. f-1(x) = x2 - 6, x ? 0
B. f-1(x) = (x + 6)2
C. Not a one-to-one function
D. f-1(x) = 
Mathematics
Find the mean for the given frequency distribution.
A. 24.7 B. 26.3 C. 25.5 D. 1.9
Mathematics
Solve the problem.If f varies jointly as q2 and h, and 
when 
and 
find f when 
and 
A. f = 10 B. f = 40 C. f = 20 D. f = 8
Mathematics
Use a graphing calculator to find the inverse of the matrix. Give five decimal places, if necessary.A = 
A. 
B. 
C. 
D. 
Mathematics