Question

Starting at 1 on the number line, we will arrive at -8 after two jumps. Choose the appropriate expression for the situation.

• A. $1-3-8$
• B. $1-4-5$
• C. $-1-4-5$
• D. $1+3+8$

Answer 1

The correct option is B $1-4-5$

Starting from 1, let we make $a$ hops to the left and arrive at -3.
$\Rightarrow 1-a=-3\Rightarrow a=1-(-3)\Rightarrow a=1+3\Rightarrow a=4$

Similarly, starting from -3, let we make $b$ hops to the left and arrive at -8.
$\Rightarrow -3-b=-8\Rightarrow b=-3-(-8)\Rightarrow b=-3+8\Rightarrow b=5$

$\therefore$ Correct expression would be $1-a-b$ or $1-4-5.$