It takes 140 minutes to finish a 40-question math test. How many minutes does it take, on average, to solve each math problem? *
2 answers:
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Answer:
all real numbers greater can or equal to -1
Step-by-step explanation:
Given the function: f(x) = (x - 4)(x - 2)
=> its root: x =4 and x = 2
We convert the factored form into standard form: f(x) =
As can be seen, the parameter a in the function is positive => the graph of it open up over its domain.
and then we convert the factored form into vertex form: f(x) = - 1
<=> when x =3 we have f(x) =1 and f(x) =-1 is the lowest point of the function
=> the range of the function: all real numbers greater can or equal to -1
Hope it will find you well.
