Question 186444
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{{{C=20t+30}}}
Substitute when {{{t=10months}}}:
{{{C=20*10+30=200+30}}}=$230.00 for 10 months (ANSWER)
If customer only has $80.00:
{{{80-phone=80-30}}}=$50.00 remaining
Therefore, {{{50/(20/month)}}}===>{{{cross(50)2.5/(cross(20)/month)=highlight(2.5months)}}}. Answer (D)
Thank you,
Jojo</pre>