If she completed the first 6 problems in 2 hours and the last 12 problems in 3 hours, the rate for completing her homework is 6problem per hour
According to the question, we are told that Deandra completed the first 6 problems in 2 hours and the last 12 problems in 3 hours, this can be written in a coordinate form as (6, 2) and (12, 3)
To get the rate of completing her homework, we will use the expression:
[tex]Rate=\frac{y_1-y_1}{x_2-x_1}\\Rate=\frac{12-6}{3-2}\\Rate=\frac{6}{1} \\Rate = 6problem/hr[/tex]
This shows that if she completed the first 6 problems in 2 hours and the last 12 problems in 3 hours, the rate for completing her homework is 6problem per hour.
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