Folgers coffee is priced at $12.88 for 80 cups of coffee, and seattle’s best is priced at $9.00 for 50 cups. which brand of coffee is better value for each cup?

Divide to find each single folgers =12.88/80= .16 cents  Seattles =9.00/50=.18 cents    Folgers cheaper

Folgers coffee

Step-by-step explanation:

Given,

In Folgers coffee,

The total price = $ 12.88

Number of cups = 80,

So, the cost of the coffee per cup =

= $ 0.161

In Seattle’s Best,

The total price = $ 9.00

Number of cups = 50,

So, the cost of the coffee per cup =

= $ 0.18

∵ 0.161 < 0.18

Hence, the Folgers coffee is better value for each cup.

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.