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notsponge [240]
3 years ago
11

The first row I️n the auditorium has 42 seats.each row after the first has 3 more seats than the row before I️t

Mathematics
2 answers:
Papessa [141]3 years ago
6 0

s = 3r + 42
s is the number of seats
r is the row number

3 because they increase by that each row
+42 because the starting row has 42

A
s = 3r + 42 \\ s = 3(25) + 42 \\ s = 75 + 42 \\ s = 117
B

s = 3r + 42 \\ 90 = 3r + 42 \\ 90 - 42 = 3r \\ 48 \div 3 = 3r \div 3 \\ 16 = r

grandymaker [24]3 years ago
4 0
A. 117 seats
B. row 16
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The raw set of data is

177; 205; 210; 210; 232; 205; 185; 185; 178; 210; 206; 212; 184; 174; 185; 242; 188; 212; 215; 247;

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