The required equation is y=8×(
Step-by-step explanation:
Given,
The two points are (1,2) and (0.5,4)
To find the exponential equation of these given points.
Formula
The general form of exponential equation is y =
where, A and B are any real number.

Now, the points satisfy the equation.
So,
2 =
------- (1) and
4 =
------ (2)
Now (1) ÷ (2) we get,
= 
or,
= 
or, b =
[ by squaring we get]
Now, from (1) we get,
2 = a×
or, a = 8
Hence,
The equation is y=8×(
Answer:
sin 90
Step-by-step explanation:
cos (0)
Using the unit circle, we know that cos 0=1
sin 1 and cos 1 are not equal to 1
sin 90 =1
tan 90 = sin 90/ cos 90 = 1/0 =undefined
Answer:
Last year the cost was $28.
This year the cost is $36.
$36 - $28 = $8
Percent of increase = amount of increase ÷ original amount
$8/$28 = $0.286
$0.286 · 100 = 28.6%
There has been a 28.6% of change in the cost.
Answer:
−20.25
Step-by-step explanation: