Answer:
x^2-49
Step-by-step explanation:
when u multiply the numbers in parenthesis u get 49-7x+7x-x^2 and when u simplify that u get x^2-49
Answer: 
Step-by-step explanation:
Given
Points are 
Convert mixed numeral to fraction

Slope of the line is

Equation of line

Step-by-step explanation:
y = 2x
if x = 1 y = 2(1) = 2
if x = 2 y = 2(2) =4
Answer:
x = 6
Step-by-step explanation:
Answer:
Step-by-step explanation:
You need to set up a ratio for the original recipe and then use that ratio for the new one.
If we need 3 cups of flour for every 4 cups of sugar, we have a 3 c flour/4 c sugar ratio, or 3/4
The new ratio is 9 c of flour for ? c of sugar. Those ratios have to be the same, so we set up an equation like this:
3/4 = 9/?
In order to keep the same ratio, you have to multiply by the same number. Since 3*3 = 9, multiply 4*3 to get your answer.