Jan is looking at a map of Roaring River. The map was
created using the scale 1 inch :
25 miles. If the river is 5.5
inches long on the map, then it
is actually
miles long.

Step-by-step explanation:

Use proportions here to solve this, with inches on the top of the ratio and miles on the bottom:

Filling in what we are given, then:

That's our scale. One inch is the same as 25 miles. If we want to know how many miles long the river actually is, we put 5.5 inches on the top with inches and the unknown number of miles, x, on the bottom with miles:

and cross multiply:

x = 25(5.5) so

x = 137.5 miles

the answer would be c:   ax + b = ax + c

step-by-step explanation:

in geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel. by extension, a line and a plane, or two planes, in three-dimensional euclidean space that do not share a point are said to be parallel.