Answer:
C: 
Step-by-step explanation:
Amplitude is changed by multiplying the entire trig function by a number, by default the amplitude is 1, so multiplying by 6 is necessary; eliminate A and B
Horizontal shift is going through the x axis, so it must be subtracted from the x value. This is only seen in choice C of the remaining answers.
Calculating the period isn't necessary because we already found the right answer but in case you need it in the future; the period is by default 2pi, to get to pi/4, it had to be 8 times smaller, so multiplying x and translations on x by 8 will get you the correct period.
Be more specific I’m not understanding your question?
Answer:
Step-by-step explanation:
let the number of bracelet be b
Let the number of necklace be n
If Ashley charges $6 for a bracelet , the total amount charged for b bracelets will be 6b
If she charge $12 for a necklace, the total amount for n necklace will be 12n
If she earned $168 in total, then:
6b + 12n = 168
Divide through by 6
b + 2n = 28
Hence the equation for this situation is b + 2n = 28
Next is to solve for b:
Make b the subject of the formula:
b + 2n = 28
subtract 2n from both sides
b + 2n - 2n = 28 - 2n
b = 28 -2n
Hence the function for b will be b = 28-2n
The answer would be 408 if u take 340 and divide it by 10, then you get 34 and times it by 12