Merry is certain that every time she parks in the municipal garage it cost her at least $2.20. if the garage charges .45 plus .25 for each half hour, how long is merry's car parked?

The time for which parking charge taken is 3.5 hours  

Step-by-step explanation:

Given as :

The total cost paid by Merry for car parking = $2.20

The charge taken by garage for parking is as ( $0.45 ) +( $0.25 for each half hour)

Let the Time taken as half hour = x

So, According to question

0.45 + 0.25 × x = $2.20

Or, 0.25 × x = $2.20 - $0.45

I.e 0.25 × x = $ 1.75

∴   x = $ ( =  7  

So,Total time spend = = 3.5 hours

Hence The time for which parking charge taken is 3.5 hours     Answer      

step-by-step explanation:

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation: