1 of 8 0-day streak

Formulate and solve a quadratic problem

Question 1 of 8

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Let \(r\) be the number of rows in the planting grid. Each row has \(r+2\) plots

The total is \(35\) plots

The meaningful domain is \(1\le r\le 10,\quad r\in\mathbb{Z}\)

(a)1 mark

Which equation models the stated relationship?

r\left(r+2\right)=37

r\left(r+2\right)=35

r+\left(r+2\right)=35

r^2=35

(b)2 marks

Solve the model equation and give both exact roots in ascending order

\(r_1\) \(r_2\)

Which root values remain after the stated conditions are applied?

Use both mathematical roots

Use only the smaller mathematical root

Use neither root

Use only the larger mathematical root

(d)1 mark

How many rows are represented by the feasible value?

\(r\) (rows) Format: Whole number