1. A theater is designed with 12 seats in the first row, 18 in the second row, 24 in the third row and so on. If this seating pattern continues, how many seats are the 20th row?
2. Rewrite the equation 8x + 4y = 16 in slope-intercept form.
3. Rewrite the equation 20x - 5y = 30 in slope-intercept form.

1. 126

2. y = -2x + 4

3. y = 4x - 6

Step-by-step explanation:

1. 12 + 6 * 19 = 126

2. 8x + 4y = 16

   (4y = -8x + 16) / 4

    y = -2x + 4

3. 20x - 5y = 30

   (-5y = -20x + 30) / -5

    y = 4x - 6

step-by-step explanation:

60

step-by-step explanation:

every triangle measures a total of 120 degrees. you have to find angle c. we know that isosceles triangles angles are equal. 60 degrees plus 60 degrees gives you 120.