With all of these parts idk how to do this

You have 6 dollars +12 pennies +to quarters + 4 dimes=2 nickels how much do you have

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Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.