exam Maths Puzzle Numerical Ability

Let A be an nxn normal matrix with nonzero eigenvalues k1, k2, ... , kr and corresponding eigenvectors x1, x2, ... , xr where r is less than or equal to n. Show that b is in the s

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exam Other Question

Which of the following exponential functions best describes the table below?
x: -0.1 , 0, 0.1, 0.2
y: 6, 3, 1.5, 0.75
a)y=6(1/2)^10x
b)y=3(1/2)^x/10
c)y=3(1/2)^10x
d)y=3(2)^1 Please help me solve the below problems. Thank you!

A.) For his long distance phone calls, Mike pays $6 monthly fee plus cents per minute. Last Month, Mike's long distance bill