Answer:

Step-by-step explanation:
we know that
The equation of a exponential growth function is equal to

where
y is the average annual salary
x is the number of years
r is the rate of change
a is the initial value
In this problem we have

substitute


For x=4 years

Answer: 17.75 pounds
Step-by-step explanation:
After putting soil in the first flower bed, Layla's bag was ⅝ full. The pound of soil will be: = 5/8 × 10 = 6.25 pounds
Eliana's bag was ⅖ full. The pound of soil will be: = 2/5 × 10 = 4 pounds
Nature's bag was ¾ full. The pound of soil will be: = 3/4 × 10 = 30/4 = 7.5 pounds
The number of pounds of soil that they put in the first flower bed altogether will be:
= 6.25 + 4 + 7.5
= 17.75 pounds
6 Pack Price:
divide total price by number of bars in the pack
=$7.86 ÷ 6 bars
=$1.31 per bar
20 Pack Price:
=$25 ÷ 20 bars
=$1.25 per bar
ANSWER: The 20 pack is a better deal with a lower price per bar. The 20 pack is $1.25 per bar. The 6 pack is $1.31 per bar.
Hope this helps! :)
A,B,D are your answers :)