Answer:
14
Step-by-step explanation:
6×15=90 90-76=14 you save 14 dollars
Answer:
C - He substituted incorrectly when calculating the constant of variation.
I think it's D as an answer but I could be wrong
20 inches is 400
10 inches is 200
5 iches is 100
So 20+10+5=35
Which means 400+200+100= 700
So the frequency of a 35 inch string is 700 cycles per second