Which expressions are equivalent to 3x + 2(x − 1) − 4? A.) 3x + 2x - 2 - 4 B.) 5x - 6 C.) 3(x - 4) D.) 3(x + 2) - 6 E.) 6(x - 1)
2 answers:
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We can model this scenario by using the exponential growth formula and plugging in values we know:
A, the resulting amount, is unknown
P, the principle (starting) amount, is 5120
r, the rate at which P increases, is .05 (if a .2 increase spans over 4 years, there is a .05 increase each year)
t, the amount of time that has passed, is 4
The equation now looks like this:
To find A, we just need to simplify the other side:
In 2013, there were ~6224 Miami highway accidents (I rounded up because the amount was more than 6223, and you can't have a fraction of a car accident).
A, the resulting amount, is unknown
P, the principle (starting) amount, is 5120
r, the rate at which P increases, is .05 (if a .2 increase spans over 4 years, there is a .05 increase each year)
t, the amount of time that has passed, is 4
The equation now looks like this:
To find A, we just need to simplify the other side:
In 2013, there were ~6224 Miami highway accidents (I rounded up because the amount was more than 6223, and you can't have a fraction of a car accident).