Answer:
y = -5x + 4
Step-by-step explanation:
y=Mx+b
Answer:
38
Step-by-step explanation:
Work shown above! Answer is
a = 144
b = 67
Let x be a number of skateboards and y be the number of bicycles in Eddie's repair shop.
Eddie asks the girls to order 54 new wheels for 21 skateboards and bicycles, then
x+y=21.
One scateboard has 4 wheels, then x scateboards have 4x wheels, one bicycle has 2 wheels, then y bicycles have 2y wheels. In total there should be ordered 54 wheels, so
4x+2y=54.
Solve the system of equations:

From the first equation
Substitute it into the second equation:

Then

Answer: 6 scateboards and 15 bicycles.
Answer:the median is 20 and the lower quartile is 16.5
Step-by-step explanation: