Answer:
A.
Step-by-step explanation:
Period of sin wave = 1/2
Period of parent sine function is 2π.
This means the x value of sine function (sin(x)) has to be divided by 4π to get a period of 1/2 because 2π/4π = 1/2
Thus, our function will be of the form:
Maximum Value = 10
Minimum Value = -4
Amplitude of the function = (Maximum Value - Minimum Value)/2
So, amplitude of the function is 7
Thus, the function will be of the form:
The function has a y-intercept other than zero, this means the function will be of the form:
The y-intercept is 3. This means for x=0, y=3. Using the values, we get:
Thus the equation of the sinusoidal function becomes:
Answer:
4x + 19 is an equivalent expression
Step-by-step explanation:
4x + 28 - 9
so therefore
4x + 19
The three students whose individual number of shirt owned sums up to 20 are <em>Will, Mandy and Cindy</em>.
<u>Given the information about the number of t-shirts owned by 4 students</u> :
- Will 4
- Mandy 7
- Greg 12
- Cindy9
<u>To obtain the which three students have shirts which sums up to 20</u> ;
- We could sum the number of t-shirts owned by any of the three students and see if it gives a value of 20.
- From the data, the 3 students who have the least number of t - shirts have a total of 20 t - shirts
<em>Will + Mandy + Cindy</em>
4 + 7 + 9 = 20 students
Therefore, the three students whosw shirts sums up to 20
are <em>Will, Mandy and Cindy</em>.
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