Let x be cost notebook and y be cost of index card
According to first condition
3x+4y=32
According to second comdition
5x+5y=32+15
Solve the two equations
Answer:
328.13
Step-by-step explanation:
1) 1.2756 x 10^4
2) 1.16464 x 10^5
3) 1.42984 x 10^5
4) 1.392 x 10^6
5) 5.977 x 10^7
6) 9.035 x 10^8
7) 2.6448 x 10^9
11 x 2 = 22
22 is closest to 20…
Since 689 / 35 is about 20, it would take around 4 seasons to break even