\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
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For a school trip, the teacher buys \(\textcolor{colorprop}{15}\) bus tickets for \(\textcolor{colordef}{\dollar 90}\). Later, the principal joins and offers to pay for additional tickets.
Knowing that the price is proportional to the number of tickets, how much will the principal pay for \(\textcolor{colordef}{8}\) tickets (
calculatrice
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e
\(\pi\)
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)
%
AC
sin
cos
tan
7
8
9
/
\(\sin^{-1}\)
\(\cos^{-1}\)
\(\tan^{-1}\)
4
5
6
*
\(x^2\)
\(\sqrt{\phantom{2}}\)
x
y
1
2
3
-
ln
exp
log
0
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=
+
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7
8
9
4
5
6
1
2
3
C
0
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dollars
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