\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
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For her birthday, Su invites her friends to the cinema. She was supposed to pay \(\textcolor{colorprop}{28}\) dollars for \(\textcolor{colordef}{4}\) tickets. Eventually, Su's parents decide to join and offer to pay.
Knowing that the price is proportional to the number of tickets, how much will Su's parents pay for \(\textcolor{colordef}{6}\) tickets (
calculatrice
!
e
\(\pi\)
(
)
%
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
.
=
+
) ?
7
8
9
4
5
6
1
2
3
C
0
.
dollars
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