Answer:
After [tex]3[/tex] months the cost will be same cost [tex]=\$ 136[/tex]
Step-by-step explanation:
let after [tex]x[/tex] months the cost is equal.
Green lawn's cost
startup cost [tex]=\$ 49[/tex]
Per month cost [tex]=\$ 29[/tex]
after [tex]x[/tex] month cost [tex]=49+29x[/tex]
yard Guard's cost
Startup cost [tex]=\$25[/tex]
Per month cost [tex]=\$37[/tex]
after [tex]x[/tex] month cost [tex]=25+37x[/tex]
Both cost are equal
[tex]49+29x=25+37x\\37x-29x=49-25\\8x=24\\x=\frac{24}{8}\\x=3[/tex]
after [tex]3[/tex] months the cost will be same
Cost [tex]=25+37\times3=\$136[/tex]