Answer: A) y = 4.4x + 7000
B) 1232
Explanation:
A) 4.4 could be the slope of a graph, considering that it is the amount of money going up at a constant rate. They also already started with $7000. That would be your y-intercept. Using this basic equation: y = mx + b (b is y intercept, m is slope) you just substitute what you know into the equation.
B) Divide 7000 by 100, which gives you 100 seperate pieces of 70. Multiply that by 4.4 because of the rate it is going up per year. That will give you 308. 308 per year for 4 years will result in 1232 if you multiply right.