Answer: D
Step-by-step explanation: On the first part, if it decreases by 17% each year, that means its value is 83% of what it was. You forgot to say that the car was bought 2 years ago.
Thus, the answer is D
For the second, just use the same logic to get 18000*0.75^4
23 to the 3 because I just took it
First, you should substitute the variables for their value in the expression.
= [ 3 (-0.5) (4)² - (-3) ] / (-0.5)
= [ 3 (-0.5) (4)² + 3 ] / (-0.5)
= [ 3 (-0.5) (16) + 3 ] / (-0.5)
= [ (-1.5) (16) + 3 ] / (-0.5)
= [ (-1.5) (16) + 3 ] / (-0.5)
= (-24+3) / (-0.5)
= -21 / -0.5
= 42
