a cost of a pen is unknown the cost of the notebook is 30 cents more than the pen mary brought 8 pens and 5 notebooks and spend 8 dollars calculate the cost of the pen and the notebook​

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.

You have 138.72 in your saving account u take out 45.23 and 18.00 you deposit 75.85 into your account

Acoffee shop orders at most $3,500 worth of coffee and tea. the shop needs to make a profit of at least $1,900 on the order. the possible combinations of coffee and tea for this order are given by this system of inequalities, where c = pounds of coffee and t = pounds of tea: 6c + 13t ≤ 3,500 3.50c + 4t ≥ 1,900 which graph's shaded region represents the possible combinations of coffee and tea for this order?