Question

Solve the following inequality.

6.3 r less-than negative 45.36

Which graph shows the correct solution?
A number line going from negative 77 to negative 67. An open circle is at negative 72. Everything to the right of the circle is shaded.
A number line going from negative 77 to negative 67. An open circle is at negative 72. Everything to the left of the circle is shaded.
A number line going from negative 7.7 to negative 6.8. An open circle is at negative 7.2. Everything to the right of the line is shaded.
A number line going from negative 7.7 to negative 6.8. An open circle is at negative 7.2. Everything to the left of the line is shaded.

Answer 1

Solve 6.3r < −45.36. Divide both sides by 6.3 (positive), so r < −45.36/6.3 = −7.2.

Open circle at −7.2 and shade to the left.

So choose: "A number line from −7.7 to −6.8, open circle at −7.2, everything to the left shaded."