Mr. mole left his burrow and started digging his way down. aaa represents mr. mole's altitude relative to the ground (in meters) after ttt minutes. a=-2.3t-7a=−2.3t−7a, equals, minus, 2, point, 3, t, minus, 7 how far below the ground does mr. mole's burrow lie? meters below the ground

Explanation:

The information given can be summarized as:

Interpetration of the terms in the model A = -2.3t - 7

The equation A = -2.3t - 7 is a linear function, which consists of two terms:

Thus, altitude at which Mr. Mole's burrow lie is the initial value given by the function, this is the altitude at t = 0, or the vertical intercept of the line; which, as just said is - 7. The negative sign tells that the value is below the ground (ground level is 0 meters). Then, Mr. Mole's burrow lie 7 meters below the ground.

b. f(x) = –√x + 3this is the correct answer

it's undefined because anything multiplied by 0 is 0. that said, 7 days is 168 hours