<h3>Solution for Line A and B:</h3>
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Point Form:

Equation Form:

Formula : Amount of change / Original amount
1. 144 - 90/ 144
2. Subtract 144 and 90
3. 54/ 144
4. Divide 54 by 144
5 0.375
6 Move the decimal two places to the right.
7. 37.5 %
Answer: 37.5% is the markup rate
Answer:
2 and a quarter days
Step-by-step explanation:
30+10=40
90-80=10
10 is a quarter of 40
Mr Stephens will need to haul in 58.4 tons o move all of the rocks
Answer:
Exponential
Step-by-step explanation: