17. If the simple interest on $800 for three years is $54, what is the rate of interest per annum?

Rate = 2.25%

Step-by-step explanation:

The question above is answered below.

Where;

i = interest

p = principal

t = time

Thus:

Check

In order to check whether or not the answer is correct, we can insert the rate into simple interest formula. If we get $54 as interest then rate of 2.25% is correct.

Thus

Having checked, interest is $54 when rate is 2.25%. Therefore, the answer (rate = 2.25 %) is correct.

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.