Acellphone weighs about 2.8x10^n pounds. which value of n is most reasonable?
a.) -3
b.) -2
c.) 0
d.) 1

Approximate weight of cell phone is between 100 gm to 200 gm.

1 Pound = 0.45359237 Kilograms

           = 0.4545 kg

2.8 pound = 2.8 × 0.4545

               = 1.2727 Kg

It is given that weight of cell phone is pounds, means Kilograms.

Which is equal to, grams.

Because, 1 Kilogram = 1,000 gram

If, n=0

Weight of cell phone = 1272.7 grams=1.2727 Kg

when, n=1

Weight of cell phone = 12727 grams=12.727 Kg

n= -2,

Weight of cell phone = 12.727 grams

n=- 3

Weight of cell phone = 1.2727 grams

None, of the weights are appropriate weight of cell phone.Neither of four options provided here is true.

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490

d

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.