The amount of blue color in the green paint is an illustration of ratios and proportions.
Cheryl's green paint has more blue color
The proportion of blue color is calculated as:
So, we have:
Express as percentage
Express as percentage
By comparison: 40% >37.5%
Hence, Cheryl's green paint has more blue color
Read more about proportions at:
x = 3 or x = 1
note that log 5 is usually taken to mean 5
using the law of logarithms
logx - logy = log ()
the right hand side can be expressed as
log 10000 - log 16 = log () = log 625
divide both sides by log 5
x² - 4x + 7 = = 4
subtract 4 from both sides
x² - 4x + 3 = 0 ← in standard form
(x - 3 )(x - 1) = 0
equate each factor to zero and solve for x
x - 3 = 0 ⇒ x = 3
x - 1 = 0 ⇒ x = 1