Answer:
y = 20 + 0.15x
where x = each minute of talk time
y = total cost
domain [0, ∞)
range [20, ∞)
Step-by-step explanation:
Your equation is like that because you always pay $20 per month, no matter how many minutes you used. Then you have 0.15 per minute so use x as a variable placeholder for the actual number of minutes.
domain is starting from 0 because you can't have negative minutes.
range is at least 20 because you pay $20 to use it even if you don't use any minutes. So it can't be less than $20.
Answer:
a) 40 hours
b) 60 hours
C) 100 hours
Step-by-step explanation:
0.2a + 0.3b+0.5c = 76
Hence: 0.2* (0.2 λ) +0.3*(0.3 λ )+0.5*(0.5 λ ) = 76
0.38 λ =76
λ = 76/0.38 =200
Thus : 40, 60, 100
Answer:
b. No x-intercept y-intercept is (0, -8)
Answer: first answer choice
Step-by-step explanation:
z = 13/9?? i don't really know hope i helped
