Calculator Moves
How do you return to the home screen?
2nd, mode
What does each variable represent in the arithmetic formula
Un= U1 + (n-1)d
Un= Value of the term
U1= Value of the first term
n= the term number you are solving for
d= common difference
What is the formula for direct variation(proportional)
y= ax2
Ronald Reagan had 400 students when it first opened in 2004. Since then the student body has grown by approximately 80 students each year.
Write an equation.
y = 80x + 400
There are 765 cars in a parking lot.
The table below shows the colors of the cars in the lot.
Cars in the Parking Lot
White 273
Black 341
Red ?
Other colors 97
Red ? = 54
How do you insert a number if you forgot something?
1. 2nd
2. Delete/DEL
What do the variables represent in the geometric sequence formula?
Un= U1rn-1
Un= Value of term you are solving
U1= Value of the first term
r= Common ratio
n= the term in the sequence
What is the normal distribution formula?
X-N(μ,σ2)
Turn these two equations into y=mx+b form.
a) -14x + y = 7
b) 2y - 6 = -6x
a) y = 14x + 7
b) y = -3x + 3
Deb used a thermometer to record the maximum daily temperature over ten consecutive days. Her results, in degrees Celsius (C°), are shown below.
15, 16, 13, 10 , 12, 14, 9, 9, 17, 11
For this data set, find the value of:
(a) the median
(b) the mean
(c) the standard deviation
(a) Median = 12.5
(b) Mean = 12.6
(c) Standard deviation = 2.727636339
How do you reset your calculator?
1. 2nd
2. +
3. 7/Reset
4. All RAM
5. Reset
What do the variables A, B, and D mean in a sine function?
y= Asin(Bx)+D
A is the Amplitude
B is the period
D is the vertical shift
What is the equation of sine function?
y= Asin(Bx)+D
If log2 (x-1) + log2 (x-3) = 3 then find the value of x.
x = 5
A music festival survey shows:
- 70% of attendees buy food.
- 40% buy merchandise.
- 25% buy both.
a) Find P(F n M).
b) Find P (F u M).
c) What percentage buy neither?
a) 0.25
b) P (F u M) = 0.70+0.40-0.25 = 0.85
c) 1-0.85 = 15%
How do you get to Simultaneous Equation Solver?
1. Apps
2. PlySmlt2
3. Simult Equation Solver
What does the n represent in the derivative formula
f'(x)=nxn-1
n is the exponent that raising x to that power of n
What is the formula for an upper outlier?
Q3+1.5 (IQR)
Solve for X.
(x - 4)2 = 81
(x + 6)2 = ?
X = -5 or X = 13
A taxi arrives on time with probability 0.9.
a) Find the probability the taxi is late
b) Find the probability it is on time for three consecutive days.
c) Find the probability it is late at least once in three days.
a) 0.1
b) 0.93 = 0.729
c) 0.271
How do you make a stats graph
1. Turn on Stat Plot
2. Edit Stats List
3. Go to Zoom
4. Zoom Stat
What does the h, y0, yn, and y1, y2 in the trapezoidal rule formula
1/2 x h ((y0 + yn) + 2(y1 + y2 +.... + yn-1))
h: height of the trapezoid
y0: the side of the first trapezoid
yn: the side of the final trapezoid
y1, y2: Repeating sides of the trapezoid
What is the Lower Outlier Formula?
Q1-1.5(IQR)
Two post offices are located at P(3, 8) and Q(7, 2) on a council map. What is the equation of the line which should be from the boundary between the two regions being serviced by the post offices?
a) Midpoint
b) Gradient
c) Perpendicular Bisector
d) Equation of perpendicular Bisector
a) Midpoint of PQ = (5, 5)
b) m = -3/2
c) m of perpendicular bisector = 2/3
d) Equation of perpendicular bisector is
2x–3y+5 = 0
Maya is a young digital artist who wants to save money to open her own studio. She deposited $12,000 from her artwork sales into a savings account that earns 4.8% annual interested compounded monthly.
a) Calculate the value of Maya's investment after 8 years.
b) Maya wants to have $18,000 saved before renting a studio space. Determine how long it will take for her investments to reach this amount.
c) After reaching the amount from part (a), Maya uses the money to pay herself a monthly artist stipend of $300 while she works on new projects. Assuming the account continues to earn 4.8% annual interest compounded monthly, determine how many monthly withdrawals she can make before the account balance reaches zero.
a) FV = $17,604.26
b) N = 102 months or 8.5 years
c) N = 67 full monthly withdrawals