When rates are expressed as a quantity of 1, such as 2 feet per second<span> or </span>5 miles per hour<span>, they are called unit rates. If you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.</span>
With any equation you are allowed to take the logarithm of both sides so
5^c=125 now take the logarithm base 5 to both sides giving.
log5(5^c)=log5(125), using the rule log(a^b)=a*log(b) you get
c log5(5)=log5(125), since log5(5)=1
c=log5(125)
0.542=0.500 + 0.040+0.002
= 
=5 tenth + 4 hundredths + two thousandths
One tenth = 
One Hundredth= 
One thousandth= 
The answer is "If it does not have four legs, then an animal is not a deer."
To form the contrapositive, switch the hypothesis and the conclusion and negate both.
The hypothesis is the "if" part and the conclusion is the "then" part.
18 ? am not really sure tho its kinda difficult lol