Step-by-step explanation:
Step one:
Given
The expression for Katya's distance away from home is given by the expression

y represents her total distance away from home
x= represent the time of travel in hours
Step two:
60 represents the rate at which the train is traveling in km per hour
20 represents the initial distance from home
we predict her distance away at a given time
say 4 hours, that is x=4hours
substituting in the expression
y=60x+20
y=60(4)+20
y=240+20
y=260km
A rate is a ration that compares two quantities that have different units of measure. If the second term in rate is 1, the ratio is called a unit rate.
B.
Using this will give you proper representations in similar triangles.
it is B The temperature started at 78°F and increased by 6°F Then the temperature increased by 5°F
Answer:
B
Step-by-step explanation:
2/5 (10x + 15) = 26
Distribute the 2/5
4x + 6 = 26
4x = 20
x = 5