Answer:
We get Q=63 when p=81
Option A is correct.
Step-by-step explanation:
We are given that 
We can write it as 
Where k is constant of proportionality.
We are given Q = 21 when p = 9
Using this Q = 21 when p = 9 we can find value of k
So, we get constant of proportionality k = 7
Now, Finding the value of Q when p = 81
We are given p=81, k=7, we need to find Q
Using the equation we can find value of Q.
So, we get Q=63 when p=81
Option A is correct.
1 gallon = 128 fluid ounces
2.5 gallons = 2.5 x 128 = 320 fluid ounces
Steve's boat uses 50 fluid ounce of fuel to 1 fluid ounce of oil, thus
for 320 fluid ounce of fuel it will use 320/50 = 6.4 fluid ounce of oil.
The expressions for this are A,B,C,E,G
Answer:
multiplied by 3
Step-by-step explanation:
red is scaled up by 3 from blue
A system of equations is good for a problem like this.
Let x be the number of student tickets sold
Let y be the number of adult tickets sold
x + y = 200
2x + 3y = 490
x = 200 - y
2(200 - y) + 3y = 490
400 - 2y + 3y = 490
400 + y = 490
y = 90
The number of adult tickets sold was 90.
x + 90 = 200 --> x = 110
2x + 3(90) = 490 --> 2x + 270 = 490 --> 2x = 220 --> x = 110
The number student tickets sold was 110.
