Ronaldo’s Heating and Cooling company uses the equation, y = 35x + 39.99 to calculate the cost, y, of working on equipment x number of hours. Brennan’s Heating and Cooling company uses the table below to calculate the cost of working on equipment for different numbers of hours. If it takes 5 hours to work on equipment, which heating and cooling company charges less and by how much less?

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Step-by-step explanation:

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the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.