Mrs. Davis buys a loaf of bread for $4.25 and several cans of soup for $1.50 each. Mrs. Lee buys a loaf of bread for the same cost as Mrs. Davis, but she buys x cans of soup with a lower cost per can.

Which function could represent y, the total cost of Mrs. Lee's purchase?

O A. y = 4.25x + 1.30

OB. y = 4.00x + 1.50

OC. y = 1.50x + 4.00

OD. y = 1.30x + 4.25

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g