The function f(t) -30000
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1+20•e^-1.5t describes the number of people who have become ill with the flu t weeks after its initial outbreak. After how many weeks were 30,000 people infected with the
flu?

What is the vertical asymptotes of the function f(x)=x-2/x*2-3x-4

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585