40% means 0.4 .
So . . . . . 7 = 0.4 N .
Divide each side by 0.4 . . . N = 7/0.4 = 17.5
The equation representing the cost of the ride is R = $5 + $0.45dd.
<h3>What is flat fee? </h3>
The flat fee charged is the fixed cost. This cost remains constant regardless of the distance travelled. The additional fee is the variable cost. It increases with the distance travelled.
<h3> Derivation of the equation that represents cost of the ride.</h3>
Total cost = fixed cost + (variable cost x miles driven)
R = $5 + $0.45dd
To learn more about flat fees, please check: brainly.com/question/25879561
