You write the problem as a mathematical expression
3x^2 + 30x + 75 =
Factor: 3 out of 3x^2 + 30x + 75.
3 (x2 + 10x + 25)
Factor using the perfect square rule.
And then your answer should be 3 ( x + 5) ^2
The answer to the problem is approximately 19 liters
Y=3x-5 and passes through the point 5,10 should be 56
2/7 cup of flour
Simply multiply 2/3 by 3/7 to get
the answer. To multiply 2 fractions together, you multiply the
numerators together and then multiply the denominator together.
2/3 x 3/7 = 6/21
But 6/21 can be expressed in a simpler fashion. Notice that both 6 and
21 can be evenly divided by 3. So divide both the numerator and
denominator by 3
(6/3)/(21/3) = (2)/(7) = 2/7
I think it is B since you and 15% of income and then add 10% tax
