Diana invested $3000 in a savings account for 3 years. she earned $450 in interest over that time period. what interest rate did she earn? use the formula i=prt to find your answer, where i is interest, p is principal, r is rate and t is time. enter your solution in decimal form rounded to the nearest hundredth. for example, if your solution is 12%, you would enter 0.12.

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.