Answer: Both of their statements are true. Explanation: If you can buy 5 shirts for $20, that means the unit price would be $4 per shirt. (to find the unit price just divide the cost by the quantity) So, it is true that you can buy one shirt for $4 and 2 shirts for $8. Hopefully this helps.
Answer:C= 10
Step-by-step explanation:
1.cross multiply and you get 3c=30
2.divide both sides by 3 and you get c=10
The given question is wrong.
Question:
What is the solution set to the inequality (4x – 3) (2x – 1) ≥ 0?
(A) 
(B) 
(C) 
(D) 
Answer:
The solution set to the given inequality is
.
Solution:
Given expression is (4x – 3) (2x – 1) ≥ 0.
Let us take the expression is equal to zero.
(4x – 3) (2x – 1) = 0
By quadratic factor, If AB = 0, then A = 0 or B = 0.
(4x – 3) = 0 or (2x – 1) = 0
Let us take the first factor equal to zero.
⇒ 4x – 3 = 0
⇒ 4x = 3

Now, take the second factor equal to zero.
⇒ 2x – 1 = 0
⇒ 2x = 1

So,
.
Now, write it in the inequality to make the statement true.

Option C is the correct answer.
The solution set to the given inequality is
.
Answer:
2770.9 in³
Step-by-step explanation:
A cylinder has a base radius of 7in and a height of 18in. What is its volume in cubic inch to the nearest tenths place?
The formula for the volume of a cylinder is given as:
πr²h
r = radius = 7 in
h = height = 18 in
Hence:
Volume of the cylinder = π × 7² × 18
= 2770.88472 in³
Approximately to the nearest tenth = 2770.9 in³