Answer:
5
Step-by-step explanation:
Natalie
100 + 10x
Her sister
25 + 25x
Where
x = number of months
Equate Natalie and her sisters equation
100 + 10x < 25 + 25x
100 - 25 < 25x - 10x
75 < 15x
Divide both sides by 15
x < 75 / 15
x < 5
Answer:
The input is -5 when the output is -8
Step-by-step explanation:
Let
y-----> the output
x ----> the input
we know that
The linear equation that represent this problem is

so
For y=-8
substitute in the equation and solve for x

Subtract 7 both sides

Divide by 3 both sides

therefore
The input is -5 when the output is -8
Answer:
y = -6x + 9/4
Step-by-step explanation:
y = mx + b
m= -6
b 9/4
The answer is 40..........