Answer:
The amount Greg paid all together is $11.34.
Step-by-step explanation:
Here, the total cost expression is given as
C(b) = 3b + 0.08(3b)
Now, given b = $3.50.
Substituting the value of b in the cost expression,
So, the cost value = 3 ( $3.50) + 0.08 (3) ($3.50)
= 10.5 + 0.84 = 10.78
or, C = $11.34
Hence, the amount Greg paid all together is $11.34.
