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Foxfire5109
26.02.2021 •
Mathematics
Two auto dealers, Winston's and Car Mart, are measuring how quickly they sell cars. Both dealers sell their cars at a steady rate.After 3 days, Winston's has 32 cars left. After 5 days, Winston's has 12 cars left.
Answer the questions to compare car sales at the two dealerships.
1. How many cars per day does Car Mart sell? How did you use the table to find this rate?
Also the picture is the number of cars at Car Mart is shown in the table.
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Ответ:
Winston's:
After 3 days: 32 cars
After 5 days: 12 cars
Difference in number of cars = 32 - 12 = 20
Difference in number of days: 5 - 3 = 2
Selling rate: 20/2 = 10 cars per day
Car-Mart:
After 2 days: 43 cars
After 3 days: 32 cars
Difference in number of cars = 43 - 32 = 11
Difference in number of days: 3 - 2 = 1
Selling rate: 11/1 = 11 cars per day
Car-Mart sells 1 car per day more than Winston's.
Starting numbers of cars:
Winston's:
Each day less, there are 10 more cars.
Day 3, 32 cars
Day 2, 42 cars
Day 1, 52 cars
Day 0, 62 cars
Winston's started with 62 cars.
Cart-Mart:
Each day less, there are 11 more cars.
Day 2, 43 cars
Day 1, 54 cars
Day 0, 65 cars
Car-Mart's started with 65 cars.
Car-Mart started with more cars. It had 3 more cars than Winston's
Ответ:
option 1: determine whether (-x)^4 - (-x)^3 is equivalent to f(x)=x^4-x^3
step-by-step explanation:
first of all we will define the even function:
an even function is a function in which
f(-x) = f(x)
theoretically, putting -x in place of x gives the same original function.
so, for the given function:
f(x)=x^4-x^3
f(-x) = (-x)^4 - (-x)^3 should be equal to the original function f(x)=x^4-x^3
hence, option 1 is correct ..