john has a part time job and is paid £6.80 per hour he works for 9 hours and 30 mins what is his total pay for the week
1 answer:
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Answer:
18. D
19. A
20. the y-intercept is 5000 and it represents the initial amount in the savings account
Step-by-step explanation:
For <u><em>vertical translation of an exponential function</em></u>, we can remember the following rules:
If exponential function is given in the form where a is a constant, then
1. is the original shifted b units up, and
2. is the original shifted b units down
<em>Hence, we can say that to shift the function given in the problem, we will "add a 5" to it.</em>
<em>Thus, is the correct answer.</em>
<em />
19.
THis problem can be solved using the exponential growth equation shown below:
Where
F is the future amount (4300 in this case)
I is the initial value/amount (325 given)
G is the Growth Factor ("double", "triple" etc. This case it says double so G = 2)
x is the time period
<em>Putting the known values, we can get the equation as:</em>
<em></em>
<em>A is the correct answer.</em>
<em />
20.
y-intercept is the point when x = 0. Let's put it and see what the value is:
<u>Note:</u> anything to the 0th power is 1
Thus the y-intercept is 5000 and it represents the initial amount in the savings account