Nubia's electricity costs (y) dollars total per day of usage (x) as modeled in the equation below. How much does Nubia pay for each day of usage?
y = 12000 + 5x

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate. true or false?

Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?

What is the slope of any line parallel to the line 8x+9y=3 in the standard (x, y) coordinate plane?