Tommy earned $76.00 in interest after 5 years on a principal of $400. jane earned $82.00 in interest after 2 years on a principal of $1,000. which bank would you rather use, tommy's or jane's? why?

The bank in which Jane has invested.

Step-by-step explanation:

For Tommy's Bank:

P = $400

t = 5 years

I = $76

Simple interest formula is given by

For Jane's Bank:

P = $1000

t = 2 years

I = $82

Simple interest formula is given by

Since, Jane's bank has higher interest rate. It means one can get higher interest if invest in this bank.

Therefore, we should prefer the bank in which Jane has invested.

the final function for the graph becomes x-2=-1. before graphing you solve the equation, where x=1. then graph accordingly.   ( on the x-axis, 1 on the line will possess a vertical line.)

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."