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- Find y/ for the function y = (secx- x2 5 - 2for the function f(x)=2x^2+9x-5 a. find the x-intercept of the this function b.find the y-intercept find the domainThe distance s (in feet) covered by a car after t seconds is given by s(t)= -t^3 +9t^2 -15t -25. What is the car’s acceleration after 3 seconds?