Mr. Mole left his burrow that lies below the ground and strated digging jis way at a constant rate deeper intot he ground. Let y represent Mr. Mole altitude in meters relatives to the ground after x minutes

y = –mx + c

Step-by-step explanation:

Mr Mole's position can be described as a straight line. And the equation of a straight line is given as:

y = mx + c

m is always the constant rate, since Mr mole is digging downwards then the constant rate, m, will be negative.

x is the time in minutes.

Therefore the equation will now be:

y = –mx + c

169

Step-by-step explanation:

13*13=169

We can split the two 13's up:

(10+3)(10+3)

Multiply 10 with 10, 10 with 3, 3 with 10, and 3 with 3.

Basically, just multiply every single term together.

100+30+30+9

100+69

169

Hope this helps!