If h of x is equal to 6 minus x , what is the value of open paren h circ h close paren times 10 ?

The expression means to evaluate the composition at 10: first find h(10), then apply h again. Since h(10) = 6 − 10 = −4, we get h(−4) = 6 − (−4) = 10. So the value is 10, choice B.

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