First you have to get all the values on the other side of y. To do that subtract 2x, then divide the values on the right by 3. You will be left with y=3-2x/3.
Answer:
a) 5 pizzas need to be ordered and half of a pizza will be left over aka 0.5
b) $45
Step-by-step explanation:
Answer:
12.7
Step-by-step explanation:
Mean is total/the amount of numbers
Total: 11+14+11+5+17+28+3=89
Amount: 7
89/7=12.7142857
Cost of installation fee is $120.
Step-by-step explanation:
Let,
Monthly fee = x
Installation fee = y
According to given statement;
6x+y=594 Eqn 1
11x+y=989 Eqn 2
Subtracting Eqn 1 from Eqn 2

Putting x=79 in Eqn 1

Cost of installation fee is $120.
Keywords: Linear equations, subtraction
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Answer:
Step-by-step explanation:
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