4. Peter is calculating interest earned on a deposit of $275 in an account that earns 8% simple interest after 12 years.

I=prt
I=275(.8)(12)
I=2,640

a. What did Peter do incorrectly?

b. What is the correct amount of interest?

a) He substituted 0.8 instead of 0.08.

b) $264

Step-by-step explanation:

From the question, the principal is p= $275, the rate is r=0.08, and the time is t=12 years.

We substitute into the formula to get:

a) The mistake is that, he substituted 0.8 instead of 0.08.

b) The correct amount is $264

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)

it is true

step-by-step explanation:

all the combinations add up i used   calculator