The expression (x^-8) (x^3) is equivalent to the expression x^n. what is the value of n? ​

n = -5

(x^a)(x^b) = x^(a + b)

(x^-8) (x^3) = x^(-8 + 3) = x^(3 – 8) = x^(-5)

she would want to sell 10 full-year subscriptions and at least 9 half-year subscriptions to get a total of at least $300. 

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step-by-step explanation:

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b. f(x) = –√x + 3this is the correct answer