Question 1085197

Jessica is walking home from a friend's house. After two minutes she is 1.2 miles from home. Seventeen minutes after leaving, she is 0.7 miles from home. What is her rate in miles per hour? 

Thanks in advance...
<pre>Let rate be S
Then we get the following DISTANCE equation: {{{matrix(1,3, (2/60) * S + 1.2, "=", (17/60) * S + .7)}}}_______{{{(2S)/60 + 1.2 = (17S)/60 + .7}}}
2S + 72 = 17S + 42 ------- Multiplying by LCD, 60
2S – 17S = 42 – 72
– 15S = - 30
S, or speed = {{{highlight_green(matrix(1,4, (- 30)/(- 15), "=", 2, mph))}}}
IGNORE all other RIDICULOUS &/or NONSENSICAL answers.