Please help me, i already know it is B i just need to know what is in the blank

The answer to the box on B is 5.075

1.45 gallons/hour x 3.5 hours = 5.075 gallons of gas used half  of  tank would be 11.6/2 = 5.8 gallons we know  5.075 < 5.8, half of the tank has not been used after 3.5 hours

positive

step-by-step explanation:

the quadrant is facing upwards

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.