The cost of having a package delivered has a base fee of $9.70. every pound over 5 lbs cost an additional $0.46 per pound. write a linear model that represents the cost, c, for the total weight, w, in pounds of the package. assume 5 lbs.
a.
c = 9.7w + 0.46
c.
c = 0.46w + 9.7
b.
c = 0.46w + 12
d.
c = 0.46(w - 5) + 9.7

answer is d

Option(d)

C = 0.46(w - 5) + 9.7

Explanation:

We are given that the delivery cost of any package has a fixed value of 9.7$ and an additional value for every 5 lbs extra weight and the additional value is given to be 0.46.

The equation for total cost C for given total weight w can be written by

sum of fixed value and every 5 extra lbs

which can be represented by the equation

C= 0.46(w-5) + 97.

Hence,  this represents a linear model for the given data.

use substitution to solve each system of equations. y = x + 5 3x + y = 25 62/87,21 y = x + 5 3x + y = 25 substitute x + 5 for y in the second equation. substitute the solution for x into either equation to find y. the solution is (5, 10)

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step-by-step explanation:

50 min

step-by-step explanation:

they will be decreasing both their times in half

60 / 2 = 30

40/2 = 20

30 + 20 = 50