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

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or