We want to determine if $a=4$a=4 is a solution of $a+7$a+7$\le$≤$11$11.

Find the value of the left-hand side of the inequality when $a=4$a=4.

Is $a=4$a=4 a solution of $a+7$a+7$\le$≤$11$11?

Yes

No

We want to determine if $y=7$y=7 is a solution of $7-y$7−y$\le$≤$2$2.

We want to determine if $u=4$u=4 is a solution of $6u$6u$>$>$18$18.

The table shows the times of six swimmers in a $1500$1500 metre race. Only those who achieve a time of $22$22 minutes or below qualify for the final.

Use the inequality $t$t$\le$≤$22$22, where $t$t is the time of each swimmer, to find all of the swimmers who qualify for the final.

Form and solve linear equations and inequations, quadratic and simple exponential equations, and simultaneous equations with two unknowns

Apply algebraic procedures in solving problems