5 sweets cost 30p. How much do 3 sweets cost ?
2 answers:
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Answer:
Step-by-step explanation:
x² - 16x + 39 = ( x - 3 )( x - 13 )
ANSWER
EXPLANATION
The equation of a parabola in factored form is
where 'a' is the leading coefficient and 'm' and 'n' are the zeros.
From the question, the zeros of the parabola are 6 and −5.
This implies that,
We plug in these zeros to get:
If (-1, 3) is a point on the graph of this parabola,then it must satisfy its equation.
We substitute x=-1 and y=3 to obtain:
The first choice is correct.