I will mark you as the brainiest if you get this correct

3.99$ divided by 8=0.50cents

50 cents per a battery

Step-by-step explanation:

6 batteries for 2.79 is a better buy

2.80 divided by 6 =46 cents per a batter

measurement of the swimming pool is given as = 7 yards 4.79 feet

first we will convert this to yards only.

1 foot = 0.33 yards

so, 4.79 feet = yards

so total yards are = yards

now we will convert this in meters.

1 yard = 0.914 meters

8.580 yards = meters

0.842 m = 0.842*100 = 84.2 cm

this becomes 7 meters and 84.2 cm

hence, the pool is 7 meters and 84.2 cm wide.