SOLUTION: Please help me solve this equation: Suppose a car travels at a constant rate of 70 kph for 2 hours and travels 55 kph thereafter. Show that distance travelled is a function of time

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Question 1185116: Please help me solve this equation: Suppose a car travels at a constant rate of 70 kph for 2 hours and travels 55 kph thereafter. Show that distance travelled is a function of time and find the rule of the
function
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
%28RATE%29%28TIME%29=DISTANCE

d, function for the distance
x, time for travel at 55 kph
d=70%2A2%2B55%2Ax


Very plain. d%28x%29=55x%2B140