Hello could you explain the steps to solve these equations. thankyou.

Solve the following system of equations by graphing. 7a. xy=3 7xy=3 Solve the following systems of equations state the method(s) used to solve. 8a. 4x+2y=1o xy=13 8b. 2x+2y=-6 5x5y=-15 80. y=-5 5x+4y=-20 8d. x=4y11 -3x+4z=-7 y=-5x+2z+25 Write a system of equations to solve the following. Include the equations and all work. 9. Ming and Carlos are selling cookie dough for a school fundraiser. Customers can buy packages of chocolate chip cookie dough and packages of gingerbread cookie dough. Ming sold 8 packages of chocolate chip cookie dough and 12 packages of gingerbread cookie dough for a total of $364. Carlos sold 1 package of chocolate chip cookie dough and 4 packages of gingerbread cookie dough for a total of $93. Find the cost each of one package of chocolate chip cookie dough and one package of gingerbread cookie dough. Determine whether each of the following sequences are arithmetic, geometric or neither. If arithmetic, state the common difference. If geometric, state the common ratio. 10a- 4, 13/3, 14/3,5,16/3, 10b.-4,12,-36,108,-324,u 10c.1,3,6,1o,15,n. 10d. -29, -34, -39, -44, -49, Given the formula, find the first five terms and the 10th term of each sequence. lla. an = -4 x 20-1 11b. an = 8 -5n Given the first term and the common difference, write the explicit formula of the arithmetic sequence. 12a. a1 = 35, d = 4 Given the first term and the common ratio, write the explicit formula of the geometric sequence. 13a. a1 = 6, r= -2Find the sum. 14b. 10 7m - 2) m= 1 14c. 9 (-2) 2-1 n=