Samuel paid $9.10, including tax, for a dog collar. before tax, the original price of the collar was $8.75. what was the sales tax rate? let r represent the rate as a decimal. complete the equation that represents the problem. (hint: the original price of the collar plus the amount of tax equals the total cost including tax.)

r=0.04

Step-by-step explanation:

The original Price of the Collar= $8.75

Amount Paid by Samuel =$9.10

Tax Paid = Amount Paid- Original Price

               =9.10-8.75=$0.35

Let x be the rate of tax.

The rate is 4%.

Therefore, rate of tax(r) in decimal = 0.04.

NOTE: Since the equation to be completed is not given, I have simply found the rate and hope you can pick it up from there.

1. sometimes

2.   never

3   .08c = 7.50+.05c   250 pages

step-by-step explanation:

1.   sometimes

the theoretical probability of rolling a 1 is 1/6.   perhaps you got really lucky and never rolled a 1   in those 60 times.   your experimental probability is 0.   or perhaps you rolled a 1   20 times.   your experimental probability is 20/60 is 1/3.     it really just depends on how you rolled in that experiment.

2.   never

the probability of the event occurring is 1.   that is being 100 % sure it will happen.   that is the maximum amount of confidence we have.

3.   no customer card cost:   .08 times number of pages

customer card cost:   7.50 + .05 times number of pages

we want to find when it costs the same amount, so we will set these equal

let c = number of pages

.08c = 7.50+.05c

subtract .05c from each side

.08c-.05c = 7.5+.05c-.05c

.03c=7.5

divide each side by .03

.03c/.03 = 7.5/03

c =250  

the cost is the same at 250 pages

25/6 hope it : )

step-by-step explanation: