Gary is 3 years older than twice the age of His sister Elena which shows an equation for this situation
1 answer:
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Answer:
Step-by-step explanation:
original functions:
Subtract the polynomials:
Distribute the negative sign:
Combine like terms:
Add like terms:
We are given that Kristine spends $20 and saves the rest each time she get paid.
We can use slope-intercept form y=mx+b to represent the equation.
Where x represents the amount Kristine earns and y represents the amount she saves.
Kristine spends $20. Therefore b= -20.
Plugging mx as just x and b=-20.
<h3>y = x-20.</h3><h3>If we plug y=0, we get </h3><h3>0 = x-20</h3><h3>x=20.</h3><h3>We can see in 4th option we have x-intercept =20.</h3><h3>Therefore, correct option is 4th option. </h3><h3 />