Beth takes measurements of her door . The diagonal line is 12 ft and the base is 4 ft . what is the height of her door? A. 10.1 ft
B. 32 ft
C. 9.5 ft
E. 11.3 ft

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Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.