Linear Equations in One Variable

SAT Math· difficulty 3/5

A linear model: students grow on average 2.5 cm/year. If a student is 150 cm at age 10, what height at age 14?

  • A

    162 cm

  • B

    160 cm

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  • C

    157 cm

  • D

    155 cm

Explanation

Growth in 4 years =42.5=10= 4 \cdot 2.5 = 10 cm. So 160 cm.

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