Answer: 
Step-by-step explanation:
Formula to find the price of an item after t years after withe a depreciation rate of r% is
, where P = Initial value of item.
Given: P = $15,000, r= 30%
Then, the value of car after t years will be :

The required general formula for the value of the car t years after its purchase:

Answer:132
Step-by-step explanation: 1.25-.50=75 the profit of each apple is 75 cents
99 dollars divided by .75 is 132
Answer:
-29
Step-by-step explanation:
Remove the brackets: -20 - 9
= -29
Answer:
117 students
Step-by-step explanation:
13/100 = X/900
(13 * 900)/100 = 117
To solve this you would add up all the money then divide it by the number of days the guy worked
100+60+150+80+90= 480
480÷5= 96
Jacks average earnings was 96 dollars per day