In states along the Gulf of Mexico, fossilized seashells from millions of years ago are often found on land many kilometers from the shore. These fossils are evidence that? A. seashells are formed by land creatures.
B. the Gulf shoreline was farther out to sea in the past.
C. the Gulf shoreline was farther inland in the past.
D. the Gulf shoreline's location has not changed.

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step-by-step explanation:

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step-by-step explanation:

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.