Simple interest
What is principal (P)?
The original amount of money that was borrowed or invested
This is the highest or lowest point on a parabola.
vertex
This trigonometric ratio is defined as “opposite over hypotenuse.”
Sine
8 + 10
18
What is time (T)?
The duration for which the principal amount of money is borrowed or invested.
In the equation y=ax:2+bx+c the direction a parabola opens depends on the sign of this coefficient.
In a right triangle, this ratio uses the “adjacent over hypotenuse.”
Cosine
12 x 12
144
What is I=PRT
The simple interest formula, used to calculate the interest earned on an investment or the interest owed on a loan
This vertical line passes through the vertex and splits a parabola into two symmetrical halves.
Axis of symetry
This mnemonic helps students remember the definitions of sine, cosine, and tangent.
SOH-CAH-TOA
8^2
64
Invest $500 at 4% simple interest for 3 years
$60
A parabola with a positive-value opens this way.
Maximum turning point
Tangent of an angle is equal to this ratio of two other trig functions.
sine divided by cosine
1893 / 3
631
A loan of $1,200 at 5% simple interest earns $180 in interest, what is the time?
3 Years
whats 9 plus 10?
21
The sine of 30° equals this simple fraction.
1/2
4159861353897438726982345698 x 59827082759083476590278054792
2.4887237e+56