x * x = x^2
x * -3 = -3x
5 * x = 5x
5 * -3 = -15
x^2 -3x + 5x -15
x^2 + 2x -15
This function is a quadratic function, with an upwards parabola.
Jim opens a savings account with $22,500. his account pays 3.5% interest compounded daily. at the end of 5.5 years, jim closes t
1 answer:
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Answer:
f(x) = 2·3^x
Step-by-step explanation:
We have the general equation of exponential functions as
y= a*b^x
We are given that the point (0,2) is on the graph so
when x= 0, y= 2
If we substitute in the general equation we see that
2 = a*b^0, any number to the power 0 is 1
2 = a
We were also given that point (1, 6 ) is on the graph;
If we substitute in our new found equation we see that
y=2·b^x
6 = 2·b^1 , any number to the power 1 is itself and
divide both sides by 2
3 = b
f(x) = 2·3^x
