The Bernards are trying to determine their babysitter's rates but are to embarrassed to just ask her. They were charged $20 for
2 hours last week, but only $31 for 4 hours this week. What is the formula to determine A(Amount) given t(time in hours)?
1 answer:
Answer:
A = 5.5t + 9
Step-by-step explanation:
We assume that the relationship between t and A is linear.
We have two points on a line: (2, 20) and (4, 31).
We now find the equation of the line.
A = mt + b
m = (31 - 20)/(4 - 2) = 11/2 = 5.5
20 = 5.5(2) + b
20 = 11 + b
b = 9
A = 5.5t + 9
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I think the answers are b & a
1/2.h.(b1 +b2)which would mean 1/2x5.5x(7+11)
It seems like the total is 45° and one of the variables were 7.
Answer:
A(2,-1) B(5,1)
(y-1)=1+1)/5-2)(x-5)
y-1=2/3(x-5)
3y-3=2x-10
2x-3y-7=0
Step-by-step explanation:
