A gym offers 11 levels of fitness classes, and in an attempt to reward those who progress toward higher levels of fitness it charges $50 less per course for each level of fitness. Jessica completed all 11 levels by taking one course at each level, and her total cost was $4675. What is the cost Q for a course at the gym's highest level?
Choose the correct choice from the following answers:  A) $175  B) $245  C) $425  D) $675  E) $725
Let the cost of a course in level 1 = x   =&gt; Cost of level 2 = x-(50*1)... and so on   =&gt; cost of level 11 = x-(50*10) = x-500   =&gt; Total cost Q of 1 course in each of the 11 levels = x+(x-50)+(x-100)+.....+(x-500)   = 11x -50 (1+2+....+10)   = 11x - (50*55)   =&gt; 11x-2750 = 4675   11x = 7425   x= 675   x-500=175   $175nswer $175
<result>A</result>
A gym offers 11 levels of fitness classes, and in an attempt to reward those who progress toward higher levels of fitness it charges $50 less per course for each level of fitness. Jessica completed all 11 levels by taking one course at each level, and her total cost was $4675. What is the cost Q for a course at the gym's highest level?