Jack's plumbing charges customers $100 per hour for repair jobs. A-1 Plumbing chargers according to the equation y= 75x + 50, where x = time in hours and y = cost in dollars . Explain why A-1 plumbing charges less than jacks plumbing for a 4-hour repair job . Does A-1 plumbing charge less than jacks plumbing for all repairs jobs ?

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step-by-step explanation:

the multiples of 15 are 15, 30,45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195,   210, 225, 240, 255, 270, 285, 300, 315, 330, 345, 360, 375,   390, 405, 420, 435, 450, 465, 480, 495, 510, 525, 540, 555, 570, 585, 600, 615, 630, 645, 660, 675, 690, 705, 720, and 735.

the factors of 15 are 1, 3, 5, and 15.

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  answer:

  write 548 as 500 + 40 + 8. multiply each addend by 5. then add the three products to get 2,740.

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convert the exponential equation to a logarithmic equation using the logarithm base (6) of the right side (36) equals the exponent (2).

ℓσg6(36)=2

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