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The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?