The ratio of girls to boys in mr. smith's homeroom is 3: 4. the ratio in mr. smith's homeroom to students in the whole 7th grade is 1: 5. the ratio of students in 7th grade to students in the whole middle school is 2: 7. if there are 12 girls in mr. smith's homeroom, how many students are in the whole middle school?

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000