Answer:
Step-by-step explanation:
The monthly cost is C(t) = 6 + 0.05t, where t is the number of minutes talked.
Talking for 8 hours would cost C(t) = 6 + 0.05(8), or $6.40;
Talking for 20 hours would cost C(20) = 6 + 0.05(20), or $7.00.
The effective cost per minute in the first case is $6.40/8 min = $0.80/min, and that in the second case is $7.00/20 min = $0.35/min
I think that it’s A, Perpendicular (correct me if I’m wrong)
Answer:
2/3
Step-by-step explanation:
4 subs 6 people
4/6= 0.66 repeated
so each person got 2/3 sub
Answer:
20 feet long
Step-by-step explanation:
To solve this you need to use the Pythagorean theorum, 
, where c is the length of rope needed and A and B are the side lengths. Think of it like a right triangle.
So, the equation is
Which is then
And the possible values of c are 20 and -20.
From here we know the answer cannot be -20 because you cannot have a negatively long length of rope, so the answer must be 20 feet.
