H(x)=x−4h, left parenthesis, x, right parenthesis, equals, x, minus, 4
What is the domain of
h
?
h?h, question mark
Choose 1
Choose 1

(Choice A)
A
All real values of
x
xx such that
x
≠
4
x


=4x, does not equal, 4

(Choice B)
B
All real values of
x
xx such that
x
≥
4
x≥4x, is greater than or equal to, 4

(Choice C)
C
All real values of
x
xx such that
x
≠
5
x


=5x, does not equal, 5

(Choice D)
D
All real values of
x
xx such that
x
≥
5
x≥5x, is greater than or equal to, 5

(Choice E)
E
All real values of
x
xx

Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?

Yoku is putting on sunscreen. he uses 2\text{ ml}2 ml to cover 50\text{ cm}^250 cm 2 of his skin. he wants to know how many milliliters of sunscreen (c)(c) he needs to cover 325\text{ cm}^2325 cm 2 of his skin. how many milliliters of sunscreen does yoku need to cover 325 \text{ cm}^2325 cm 2 of his skin?

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?