Answer:
25 choices
Step-by-step explanation:
Given
Possible Combinations: 1 to 25
Selections: 3 numbers
Required
Determine the number of choices of the first number
The first number of the lock can be any of 1 to 25.
This is so because when you counting from 1 to 25, there are 25 numbers
<em>Hence, number of choices is 25 numbers</em>
Answer:
$8
Step-by-step explanation:
Let f = 1 kg of French Roast coffee
Let b = 1 kg of Boxer Blend coffee
Given:
- Joanne buys 1 kg of French Roast and 1 kg of Boxer Blend.
- Joanne spends $14 for her purchase.
⇒ f + b = 14
Given:
- Jacob buys 2 kg of French Roast and 3 kg of Boxer Blend.
- Jacob spends $36 for his purchase.
⇒ 2f + 3b = 36
Rewrite the first equation to make f the subject:
⇒ f + b = 14
⇒ f = 14 - b
Substitute this into the second equation and solve for b:
⇒ 2f + 3b = 36
⇒ 2(14 - b) + 3b = 36
⇒ 28 - 2b + 3b = 36
⇒ 28 + b = 36
⇒ 28 + b - 28 = 36 - 28
⇒ b = 8
Therefore, the <u>price of 1 kg of Boxer Blend coffee is $8</u>
Answer: the answer is D.
Step-by-step explanation:
This tells you two things
1-r is positive, so grade school performance and Regents exam score tendto increase and decrease together.
2-r is fairly close to 1, so the direct relationship is fairly strong.