The height of a hill, h of x , in a painting can be written as a function of x , the distance from the left side of the painting. Both h of x and x are measured in inches. h of x is equal to negative 1 fifth x open paren x minus 13 close paren What is the height of the hill in the painting 3 inches from the left side of the picture?
Substitute x = 3 into the function: h(3) = −(1/5)(3)(3 − 13). Since 3 − 13 = −10, h(3) = −(1/5)(3)(−10) = 6. The height is 6 inches, which is choice C.
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