SOLUTION: While training for soccer you work out each day after school. During your workout you lift weights and play soccer for a total of 75 minutes. You burn 7 calories per minute when

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Question 198041: While training for soccer you work out each day after school. During your workout you lift weights and play soccer for a total of 75 minutes. You burn 7 calories per minute when playing soccer and 3 calories per minute when lifting weights. If t is minutes you play soccer write an expression in terms of t for the total calories you burn during your workout. Then find the total number of calories burned if you play soccer for 55 minutes.
Is this right: 75= 7+3+t
75= 10+t
65= t(total calories burned
then you would do 75= 7+3+55t
75= 10+55t
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Given:
t is minutes you play soccer
75 min is the total workout
75+-+t is minutes lifting weights
7t is calories burnt playing soccer
3%2A%2875+-+t%29 is calories burnt lifting weights
Let C%28t%29= total calories burnt during workout
C%28t%29+=+7t+%2B+3%2A%2875+-+t%29
C%28t%29+=+7t+%2B+225+-+3t
C%28t%29+=+4t+%2B+225 calories answer
and
t+=+55 min
C%2855%29+=+4t+%2B+225
C%2855%29+=+4%2A55+%2B+225
C%2855%29+=+220+%2B+225
C%2855%29+=+445 calories