Someone, pls. I need ur help.

48°

Step-by-step explanation: AD=AB, ∠ADC=∠ABC.

(5x-147)°=2x°, 3x=147, x=49.

So, ∠ADC=∠ABC=98°,

∠DCB=360°-{116°+2(98°)}

=360°-(116°+196°)

=360°-312°

=48°

-2 is the right

step-by-step explanation:

f(x)=2x^2 -1 

translation is a function transformation that transform the function in a way of translating. by translating the function its graph is moved  up an down. moving the function f(x) 2 units to the left will be the new function g(x) with the equation: g(x)=f(x+2)=2(x+2)^2 -1