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kaleahlove13
17.12.2020 •
Mathematics
2 points
(7) Joanna gets paid $7.70 per hour plus a 15% commission on her sales.
She worked 32 hours last week and had $1,200 in sales. How much did she
make? *
Solved
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Ответ:
Part A
Chorus:
Expontential growth = b*a^x
b = 15
a = 1.12 (a= r+1), r = 12%
Which gives a function of f(x) = 15*1.12^x
Band
Linear growth = ax+b
a = 2
b = 30
Which gives a function of g(x)=2x+30
Part B:
f(9) = 15*1.12^9 = 41.59
g(9) = 2*9+30 = 48
Part C:
This is probably problem solving, where you're allowed to use calculators and other softwares.
Therefore you can use different softwares, and make f(x) = g(x).
I did this, and got it to 10.95427141
[email protected]
Ambitious