There are (24)2 ⋅ 20 books in a cupboard. what is the total number of books in the cupboard? 22 26 28 216

the answer is  2^8

also c

The answer is C.

Step-by-step explanation:

I took the Test!

Also if you multiply the 4 by the 2 it will equal 8 and since the 0 cancels out the 2^0 you only have to apply the ^8 to the 2 to get  !!!

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$54.99

step-by-step explanation:

$54.99 includes 500 min. if she does not exceed 500 min then her bill is $54.99

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