{x | x R, x < -7}
{x | x R, x < -3}
{x | x R, x < 3}
{x | x R, x < 7}
Answer:
A. {x | x R, x < -7}
Step-by-step explanation:
B. C(n)=0.75n-0.25
C. C(n)=1.0n
D. C(n)=0.75n
Answer:
B. C(n)=0.75n-0.25
Step-by-step explanation:
Given : Cost of one candy = $0.75
There is a coupon of $0.25 off on total purchase .
To Find : Write a function rule for the cost of n pieces of candy.
Solution :
Since we are given that total candies bought = n
Cost of one candy = $0.75
Cost of n candy = $0.75n
So, cost of total purchase = $0.75n
Since on total purchase there is a off of $0.25
So, cost of total purchase after off will be $0.75n -$0.25
⇒C(n)= 0.75n-0.25
Where C(n) denotes the total cost after getting off
Hence Option B is correct.
A function rule for the cost of n pieces of candy is C(n)= 0.75n-0.25
pay a sales tax that is 6.25% of the
car’s price.
Which of the following estimates is
closest to the amount of sales tax Jaya
will pay for the car?
A. $1,200
B. $1,400
C. $1,800
D. $2,100
Answer:
Jason would have to work 60 hours.
Step-by-step explanation:
The equation you would use would be 450 + 12.50t = 1200.
1200 is the money needed, 450 is a constant factor, but the 12.50 changes depending on how many hours Jason works.
You will have to use inverse operations so you would go 450 + 12.50t - 450 = 1200 - 450. That equals 12.50t = 750. Then you divide 12.50 by 750 because 12.50t is multiplying. 750 ÷ 12.5 = 60. So Jason has to work 60 hours!
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