A piano teacher charges students $20.25 each month, plus $5.25 per hour for lessons.
2 answers:
Answer:
99$
Step-by-step explanation:
you take the 5.25$ per hour and multiply it by the 15 hours, and then you add the 20.25$ per month
Answer:
suppose the number of 2 hours lessons are x and 1 hour lessons are y; thus,
2x+y=25
50x+30y=690
to get the values of x and y we solve the quadratic equation given;
from the top equation:
y=25-2x.......i
substituting i in our second equation we get:
50x+30(25-2x)=690
50x+750-60x=690
-10x=-60
thus;
x=6
hence we conclude that the number of 2 hours classes are 6 hours
Step-by-step explanation:
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Answer:
About 9.6 meters
Step-by-step explanation:
Refer to attachment
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Answer:
Step-by-step explanation:
y2-y1/x2-x1
-1-(-4)/3-7
3/-4
y=mx+b
For the y coordinate it can be either -4,or -1
-4=3/-4x+b
b=13/4
Well you would subtract 0.4 by 0.3 and get 0.1. So 0.1 is your answer
