Step-by-step explanation:
Tax charge
80 × 6.75/100 = 5.4
Cost + tax charge
80 + 5.4 = 85.4
Tip (15% of cost and tax)
85.4 × 15/100 = 12.81
(Cost + tax charge + tip)
85.40 + 12.81 = 98.21
therefore, $95 is not enough.
First find the derivative,
.
Then find the critical point,
.
Hope this helps.
I am a little rusty here :(.
Answer:
3x2(4x – 3) + 1(4x – 3)
Step-by-step explanation:
Answer:
the answer to your question is 0.4375
4x+30
4x equals how many months you go
30 is the fee that comes with the monthly fee