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Kisachek [45]
1 year ago
16

Students graphed the growth rate over several weeks of two plants in their classroom. The equations of both plants are given whe

re x represents the time in weeks and y represents the heights of the plants in inches.
Plant A: y = 1.8x + 3.1
Plant B: y = 2.3x + 1.9
Approximately how many weeks will it take for both plants to reach the same height? Round your answer to the nearest tenth.
1.9 weeks
2.4 weeks
3.1 weeks
7.4 weeks
Biology
2 answers:
klio [65]1 year ago
8 0

Answer:

Answer is B

Explanation:

took it on edge, it was right.

Burka [1]1 year ago
7 0
The answer is <span>2.4 weeks
</span>
<span>x - the time in weeks
y - the heights of the plants in inches

</span><span>When both plants to reach the same height, then yA = yB
</span><span>y = 1.8x + 3.1
</span><span>y = 2.3x + 1.9

</span>2.3x + 1.9 = 1.8x + 3.1
2.3x - 1.8x = 3.1 - 1.9
0.5x = 1.2
x = 1.2 : 0.5
x = 2.4
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