If a polynomial function f(x) has roots -9 and 7 - I, what must be a factor of f(x)? ОООО
(х – (7 + ))
О (х – (-7 — ))
(х+ (7 + 1)
(х + (7 — ))

Acontractor needs 54 square feet of brick to construct a rectangular walkway. the length of the walkway is 15 feet more than the width. write an equation that could be used to determine the dimensions of the walkway. solve this equation to find the length and width, in feet, of the walkway.

Match each expression with its simplified form.

How can you find the conditional probability of a given b as the fraction of b’s outcomes that also belong to a, and interpret the answer in terms of the model? i just need a good explanation