Answer:
y= 5 + 0.9x
Step-by-step explanation:
Giving the following information:
NYCab company charges an initial rate of $5.00 for a ride, plus $0.90 for each mile driven.
<u>We need to structure the total cost formula:</u>
y= total cost
x= miles driven
fixed cost= $5
Unitary variable cost= $0.9
y= 5 + 0.9x
I can’t see the questions clearly. Could you retake the picture again?
9514 1404 393
Answer:
A. d = ∑[k=1,n] (4.5+0.5k)
B. 9
Step-by-step explanation:
A) The series has first term 5 and common difference 0.5. The general term is given by ...
an = a1 +d(n -1)
an = 5 + 0.5(n -1) . . . . substitute numbers for this series
an = 4.5 +0.5n . . . . . . simplify
The sum is the sum of these terms:

__
B) The sum of terms of an arithmetic series is the average of the first and last, multiplied by the number of terms. We want to solve for n to make the sum greater than 60.

Melissa's total distance will first exceed 60 miles the 9th time she trains.
<span>22,119 rounded to the nearest hundred
=
22,100
hope it helps</span>