Pls help need answer fast! - will follow

What is the explicit formula for this sequence? -7, -4, -1, 2, a.) an = 8 + (b - 1)3 b.) an = -7 + (n - 1)3 c.) an = 3 + (n -1) (-7) d.) an = -7 + (n - )

Find the maximum value of p= 4x + 5y subject to the following constraints :

What is the sum of these mixed numbers 4 2/3+ 3 1/9