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3 years ago

ANSWER PLEASE PLEASE PLEASE

Mathematics

2 answers:

Vaselesa [24]3 years ago

7 0

$24.50 is your original amount, and you know you have a 20% added to that. So, you can multiply the money by the percentage:

24.5 x 1.2 (we multiply it by 1.2 because we want the tip PLUS the original amount)
= 29.4

So the answer is the first choice, $29.40

tatuchka [14]3 years ago

3 0

After you get 1.2 you have to multiply it by 24.50 and you should get 29.50

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2 years ago

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3 years ago

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3 years ago

Read 2 more answers

It costs $107 for 10 students and $137 for 15 students. How much does it cost for 12 students?

Anestetic [448]

$\bf \begin{array}{ccccccccc}
&&\stackrel{students}{x_1}&&\stackrel{price}{y_1}&&\stackrel{students}{x_2}&&\stackrel{price}{y_2}\\
% (a,b)
&&(~{{ 10}} &,&{{ 107}}~) 
% (c,d)
&&(~{{ 15}} &,&{{ 137}}~)
\end{array}
\\\\\\
% slope = m
slope = {{ m}}\implies 
\cfrac{\stackrel{rise}{{{ y_2}}-{{ y_1}}}}{\stackrel{run}{{{ x_2}}-{{ x_1}}}}\implies \cfrac{137-107}{15-10}\implies \cfrac{30}{5}\implies \cfrac{6}{1}\implies 6$

$\bf \stackrel{\textit{point-slope form}}{y-{{ y_1}}={{ m}}(x-{{ x_1}})}\implies y-107=6(x-10)
\\\\\\
y-107=6x-60
\implies 
y=6x+47\\\\
-------------------------------\\\\
\textit{how much will it be for }\stackrel{x}{12~students?}\qquad y=6(12)+47$

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3 years ago