Which statement about rational numbers is not correct?
a) all rational numbers are also integers.
b) zero is a rational number.
c) all integers also rational numbers.
d) all rational numbers can be written in the former a\b

Suppose a least-squares regression line is given by modifyingabove y with caret equals 4.302 x minus 3.293. what is the mean value of the response variable if xequals20?

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?