What is the coefficient of the variable in the expression 6 − 4x − 8 + 2?

a. 6
b. 2
c. −4
d. −8

What is the value of the digit 1 in the number 13?

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%