Hannah's electricity company charges her a flat rate and then a certain amount per kilowatt hour. Use the table to help you answer the following questions.

Hannah's Electric Bill

Kilowatt hrs 20 25 30 35 40 45 50
Electric bill

$17.20 $17.75 $18.30 $18.85 $19.40 $19.95 $20.50
1. This data can be modeled with a
exponential
regression equation.

2. Choose the appropriate regression equation.
y=15.34(1.01)^x

3. If Hannah's bill is $21.60, how many kilowatt hours did she use?

4. If Hannah uses 73 KwH, how much will her bill be?

5. If her bill is $67.80, how many kilowatt hours did she use?

the 1st digit is in the 100s n its 1

step-by-step explanation:

3,589÷18 = 199.389

so the first digit of the quotient is in the 100s n its 1

the diver is 33 feet below the surface.

step-by-step explanation:

hope this

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