Answer: 10.7x + 5
Step-by-step explanation:
(3.5 + 7.2)x + (-5 + 10) = 10.7x + 5
The answer will be the third one: Yes, because the total will be $37.50.
The equation to be solved is: 3 [ 2 ^ (2t - 5) ] - 4 = 10
The steps are:
1) transpose - 4=> 3 [ 2^ (2t - 5) ] = 10 + 4
2) Combine like terms => 3 [2^ (2t - 5) ] = 14
3) Divide both terms by 3 => 2^ (2t - 5) = 14 / 3
4) Take logarithms of both sides => (2t - 5) log (2) = log (14/3)
5) Divide both sides by log (2) =>
log (14/3)
2t - 5 = -------------------
log (2)
6) transpose - 5+>
log (14/3)
2t = ------------------- + 5 = 2.22 + 5
log (2)
2t = 7.22
7) divide both sides by 2 => t = 7.22 / 2 = 3.61
Answer:
y = 21500 (.91)^t
Step-by-step explanation:
The equation for exponential growth (or decay) is
y =ab^x
where a is the initial value
and b = 1 - growth (or decay) rate
We know the initial value is 21500
and the decay rate is 9%
b = 1-.09
b = .91
y = 21500 (.91)^t
A four sided shape with no equal sides is a polygon.
