5x² + 9 y² + 9 z² =
Alguien sabe como resolver y responder esto ??

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

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 - )

What equation results from completing the square and then factoring? x^2+22x=31 a) (x+11)^2 = 152 b) (x+22)^2 = 152 c) (x+11)^2 = 53 d) (x+22)^2 = 53