Answer:
have you tries adding them together?
At the time of her grandson's birth, a grandmother deposits $12,000.00 in an account that pays 2% compound monthly. What will be that value of the account at the child's twenty-first birthday, assuming that no other deposits or withdrawls are made during the period.
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A(t) = P(1+(r/n))^(nt)
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A(21) = 12000(1+(0.02/12))^(12*21)
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A(21) = 12000(1.5214)
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A(21) = #18,257.15
Answer:
21 is a function but 20 is not
Answer:
Straight line graph with positive gradient (slope)
y-intercept: (0, -3)
x-intercept: (12, 0)
Step-by-step explanation:
is a linear function
The line intercepts the y-axis when x = 0:
![y=\dfrac14(0)-3=-3](https://tex.z-dn.net/?f=y%3D%5Cdfrac14%280%29-3%3D-3)
Therefore, the y-intercept is (0, -3)
The line intercepts the x-axis when y = 0:
![\implies \dfrac14x-3=0\\\\\implies \dfrac14x=3\\\\\implies x=12](https://tex.z-dn.net/?f=%5Cimplies%20%5Cdfrac14x-3%3D0%5C%5C%5C%5C%5Cimplies%20%5Cdfrac14x%3D3%5C%5C%5C%5C%5Cimplies%20x%3D12)
Therefore, the x-intercept is (12, 0)