New research supports the idea that people who get a good night's sleep look more at 31 were photographed twice, once after a good night's sleep and once after being kept
and lighting were the same for both photographs. Observers then rated the photograp
under the two conditions was compared. The researchers report in the British Medical
deprived people appear less attractive compared with when they are well rested."
1Stein, R., "Beauty sleep no myth, study finds", Washington Post, washingtonpost. com, ac
(a) What is the explanatory variable?

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis:

answer: 1475

step-by-step explanation:

becuase you have to know what they are asking you