40) 40) In a certain lottery, 3 numbers between 1 and 12 inclusive are drawn. These are the winning
numbers. How many different selections are possible? Assume that the order in which the numbers
are drawn is not important.
B) 6
C) 1320
D) 1728
A) 220

the workers who do no drive has no reasonable reason to buy gasoline due to they don't have anything to use it for

a

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