Question

1. -1.3 ≥ 2.9 - 0.6r

Explanation:

Step1: Subtract 2.9 from both sides

$-1.3 - 2.9 \geq 2.9 - 0.6r - 2.9$
$-4.2 \geq -0.6r$

Step2: Divide by -0.6, reverse inequality

$\frac{-4.2}{-0.6} \leq \frac{-0.6r}{-0.6}$
$7 \leq r$

Answer:

$r \geq 7$