PLEASE HELP The cost of an iPhone has a decay rate of one-fourth every 6 months. The iPhone initially costs $735.

The equation that represents this is
y = ( blank )( blank )^x

how much money is the iPhone worth after 2 years? $

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

the answer is b

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72