suppose you are saving money for a new cell phone. at week 0 you have $20 and at week 10 you have $100. if y represents the amount of money you have saved and x represents the number of weeks, find and interpret the slope of the linear equation
A. 1/8; $8 is put away each week
B. 10; 10$ is put away each week
C. 8; $8 is put away each week
D 1/10; 10 is put away each week
Stacey Warren - Expert brainly.com
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I THINK it's C, I asked the same question and still waiting for an answer
hmm i dont know about that i thought it was that one too but i got 100 at day 9
think of the linear equation as y=ax + b
where x,y are the coordinates, a is the slope, b is the interception of the line to x-axis when x = 0
so, in this question, x is weeks, y is total money, a is slope, and b is what u got at the beginning, $20
y = a (0) + 20= $20 first week
100 = a (10) + 20 is the question. you can easily see that a should be 8, that means slope is 8
and you save $8 per week for 10 weeks