christen made $987 in tips last year $5,891 in wages and earned $786 in interest income what was her gross income lat year.
1 answer:
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So an exponential equation is gonna be used for this problem. The formula for such is 
, in which the a variable is the initial value and the b variable is the growth/decay rate.
For this situation, 1200 is gonna be your a variable since you've started out with it. And as for your b variable, its gonna be 107.3%, or 1.073, since it's increasing.
Your equation should look like this:
and from here just plug in 10 into the x variable and solve.
Multiply (1.073)^10 (don't round answers until the end), and take that answer and multiply it with 1200, your answer should be $2427.61.
For this situation, 1200 is gonna be your a variable since you've started out with it. And as for your b variable, its gonna be 107.3%, or 1.073, since it's increasing.
Your equation should look like this:
Multiply (1.073)^10 (don't round answers until the end), and take that answer and multiply it with 1200, your answer should be $2427.61.
A.
cost is $16.50
B.
rearrange to solve for t:
C. This is the same as part B, only the rate changed
they ask for the greatest number of minutes, so we round down (take the floor of the value).
the answer is 105 minutes.
cost is $16.50
B.
rearrange to solve for t:
C. This is the same as part B, only the rate changed
they ask for the greatest number of minutes, so we round down (take the floor of the value).
the answer is 105 minutes.