Question

The cost for a local move is given by y=x+100 where x is the number of hours and y is the cost in dollars. How much would be charged for a move that required 3 hours?

How many hours were spent on a move that cost $400?

Answer 1

Explanation:

The cost for a local move is given by y=x+100

where, x = number of hours

where, y = cost in dollars

given x = 3hours

y = 3 + 100

y = 103

therefore a move that requires 3 hours would be charged $103

Also given y = $400 we substitute value of y into the equation,

y = x + 100. this gives,

400 = x + 100

x = 400 - 100

x = 300

therefore the hours of a move costing $400 is 300hours