Sally is 5 years older than Helen.The product of their ages is 50. How old is Helen?
2 answers:
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Answer:
D. y =
Step-by-step explanation:
The solutions to this graph (meaning when y equals 0 or when the graph crosses the x-axis) are 4 and 5.
The only answer choice that has the solutions 4 and 5 when you factor it out is D.
Here's the proof:
Factors of 20: - 5 & -4
Sums that add up to -9: -5 + (-4)
(factor the first two terms and the last two terms separately)
(x - 5) (x - 4)
Hope it helps (●'◡'●)