easy · SAT Math
A biologist is studying the growth of two plant species. Species A had an initial height of 10 cm and grew at a rate of 2 cm per week. Species B had an initial height of 5 cm and grew at a rate of 3 cm per week. The biologist models the heights, y, in centimeters of the plants after x weeks with the system of equations y = 2x + 10 and y = 3x + 5.
After how many weeks will the two plant species have the same height?
- 2.5
- 5
- 15
- 20
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