The function f(x) varies directly with x and f(x)=90 when x = 35. What is f(x) when x = 4?

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step-by-step explanation:

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the expression (1.26)2t reveals the approximate rate of increases in the number of plants semiannually.

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correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

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