1: Additional Practice 3.2.AP-10
Use the GCF and the Distributive Property to find the sum.
21 + 77
Write each number as a product using the GCF as a factor, and apply the Distributive Property.
21 + 77 =
(Use the operation symbols in the math palette as needed. Do not simplify:).

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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

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