Can some one help me please

The table above shows approximate conversions from gallons to liters. what is the value of x?

Can someone me i’m confused. will give brainliest and a whole bunch of points

If f(x) = 4 - x2 and g(x) = 6x, which expression is equivalent to (g-f)(3)? 06-3-(4 + 3)2 06-3-(4-33 6(3) - 4 +32 6(3) -4 -32