Your first line calculation is already true but reversed. The demand will decrease (that mean the formula would be minus) by 20 gallons for every $0.4 price increase, which means 50 gallons/$. To find the formula you need to insert one sample of either the first equation (65gallon and $3.1) or 2nd equation (45 gallons and $3.5). The formula for demand should be:
q= C - 50p
65 gallon= C- 3.1 * 50
C= 65 gallon + 155 gallon= 220 gallon
The formula would be:
q= 220- 50p
So the second question can be solved by putting 0 on the Q. It would be:
q= 220- 50p
0=220-50p
50p=220
p= $4.4
Answer:
-5
Step-by-step explanation:
Since,there are twelve digits given, we can arrange them in such a way that they make three rows.
On subtracting the second row from the first row, we have
3,3,5,4, the first three digits of these numbers are equal to the sum of the first three numbers in the third row. With the help of this, the answer will b -5.
Answer:
y=3.5
Step-by-step explanation:
6y+4-3y= -5+y+17
Combine like terms
3y+4=11+y
Subtract y on both sides
2y+4=11
Subtract 4 on both sides
2y=7
Divide by 2 on both sides
y= 3.5