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The value of y varies directly with x. Which function represents the relationship between x and y if y = 195 when x = 13

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2