A store sells memory cards for $25 each. The markup for each memory card is 25%. How much did the store pay for 50 memory cards?

$937.50

Step-by-step explanation:

25 decrease 25% =

25 × (1 - 25%) = 25 × (1 - 0.25) = 18.75

18.75 × 50 = 937.50

i think this could be a possible answer (1 / 84) -1

good luck! : d

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: