Y = sit ups, x= days
y= 2x + 15
33 = 2x + 15 (subtract 15 from both sides)
18 = 2x (divide both sides by 2)
9 = x, 9 days
The function is f(7), a= 7 i think this is right
Answer:
Step-by-step explanation:
The train uses

If you reduce that you get that the train uses

To find the slope of the line, we will use the 2 points on the coordinate plane where the graph goes through: (0, 0) and (400, 200)
Applying the slope formula:

Answer:
2
Step-by-step explanation:
Multiply all of the fractions together.