Answer:
B: 
Step-by-step explanation:
1. Substitute 
for c: 
2. Solve substitution: 
3. Compare to calculated answers when 
4. when is
Answer:
864 miles
Step-by-step explanation:
648/9 = 72 mph
72 x 12 = 864
Answer:
x = 12
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
The line on the left has a negative slope of - 1 and a y- intercept at 2
The line has a closed circle at x = 1, thus
- x + 2 for x ≤ 1
The line on the right has a positive slope of 1 and a projected y- intercept at 1
The start of the line has an open circle at x = 1 indicating it cannot equal 1, thus
x + 1 for x > 1
The definition for the function is B
Answer:
It will take 5 weeks for you and your friend to have the same balance
Step-by-step explanation:
Let
Your savings expression be
135 + 12x
Your friends savings expression
95 + 20x
Where,
x = number of weeks for you and your friend to have the same balance
Equate the two expressions
135 + 12x = 95 + 20x
Collect like terms
135 - 95 = 20x - 12x
40 = 8x
Divide both sides by 8
40/8 = x
x = 40/8
= 5
x= 5 weeks
Check
Your savings expression
135 + 12x
135 + 12(5)
=135 + 60
= $195
Your friends savings expression
95 + 20x
95 + 20(5)
= 95 + 100
= $195
Therefore, It will take 5 weeks for you and your friend to have the same balance
