3.) When debris is dropped from a cliff its height, h, measured in feet at various times, t, measured in seconds, is shown in the accompanying table.

Time (t): 0 1 2 3 4 5
Height : 875 843 807 741 662 450

a) State the quadratic regression equation which models the data [Round coefficients to the nearest thousandth.]

b) Using this regression equation, find the approximate height, rounded to the nearest foot, of the debris at time t = 7 seconds.

c) Predict at what time, to the nearest tenth of a second, the debris will hit the ground.

step-by-step explanation: noo

answer: city needs 2.4 inches of rainfall more to match the record of 40 inches.

step-by-step explanation:

since we have given that

total annual rainfall a city record = 40 inches

this year, total rainfall recorded = 37.6 inches

number of inches of rainfall   is needed to match the record of 40 inches is given by

hence, city needs 2.4 inches of rainfall more to match the record of 40 inches.

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3