Answer:
-2
Step-by-step explanation:
Use the slope formula when given two points
Slope formula = 
( the x and y values are determined by the given points )
Given the points ( 0 , 5 ) and ( 1 , 3 )
Plug in the x and y values of the given points into the formula
( remember y values on top x values on bottom )

Hence, the answer is D
Y = -1/2x - 1
Tell me if you need explanation
All you have to do is times 15.5 with 9.48 and you get your answer witch is $146.94
Answer: 5 gallons
Step-by-step explanation: the gallons are in decimal points. 1/2 + 1/2 + 2 + 1 = 5. the .05 and 1/2 are the same thing. the .5 + .5 equals 1