A meteorologist conducted a study according to the average temperatures of cities. Group One was for cities with average temperatures which are more than 20 degrees above freezing. Group Two was for cities with average temperatures which are less than 3 degrees below freezing. The cities and their average temperatures are shown below. City A: -16°C City B: 26°C City C: -5°C City D: 31°C City E: 41°C City F: -2°C City G: 22°C City H: 18°C Which cities would be included in Group Two? City A City B City C City D City E City F City G City H

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step-by-step explanation:

whatare you sayig

step-by-step explanation:

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places

range =5

step-by-step explanation:

to find the range, we take the largest value and subtract the smallest value.

the largest value is 5

the smallest value is 0

the range is 5-0   =5