Functions and Linear Relationships Bridge

Functions and Linear Relationships Bridge practice with teacher guidance, common slips, and next-step routes.

Core · Functions and Linear Relationships Bridge · Independent practice · Single Choice

Each daily test starts at 0. On Day 1, a photo-checking program can check 400 photos in 3 hours. Its 3-hour capacity grows by 21 photos each new day. The school archive has 960 photos. What is the first day its capacity is greater than 960 photos?

Day 1400+ 21 each new dayNeed> 960

Day26Day27Day28Day29

First day

First Day

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Watch: Watch whether the learner checks both the chosen day and the day before it. The decisive evidence is Day 27 = 946 and Day 28 = 967, so Day 28 is the first day above 960.

Misread: A learner who chooses Day 27 may be treating the number of increases as the day number or choosing the last day below the target. A learner who gives 967 is answering with a photo capacity instead of a day.

Curriculum: This task uses an arithmetic growth rule, a strict inequality, and an adjacent-term check to find the first whole-number threshold crossing. The scored skill is selecting the least qualifying day, not calculating a photo total.