Which unit rate is the lowest price per ounce? choice a: 5 ounces of raisins for $1.49 choice b: 12 ounces of raisins for $3.59 choice a choice b the unit rates are equal. the unit rates cannot be determined.

Choice A  is the lowest price per ounce

Step-by-step explanation:

Choice A: 5 ounces of raisins for $1.49

Cost of 5 ounces of raisins = $1.49

Cost of 1 ounce of raisins =

                                         =

Unit rate =$ 0.298

Choice B: 12 ounces of raisins for $3.59

Cost of 12 ounces of raisins = $3.59

Cost of 1 ounce of raisins =

                                         =

Unit rate =$0.299

Hence  Choice A  is the lowest price per ounce

256π units²   (answer b)

step-by-step explanation:

the formula for the surface area of a sphere of radius r

is             a = 4πr²

and so, if r = 8 units, then the surface area is:

a = 4π(8 units)² = 256π units²   (answer b)