Equations/Inequalities
Alex wants to attend a robotics workshop that costs $420. To earn the money, Alex decides to walk dogs and babysit over the summer. Alex charges $20 for each dog walk and $30 for each babysitting job. He will do a combination of these jobs to earn the money.
Which equation represents the number of dog walks, d, and the number of babysitting jobs, b, Alex needs to do to earn $420?
A) 20d+30b=420
B) 30d+20b=420
C) 20d+30b=500
D) 30d+20b=500
A) 20d+30b=420
Which point is the solution to the graphed system of equations?
Graphic #1
(-3,-1)
Which function represents the parent function of absolute value shifted 5 units right?
Graphic #8
D
Which correlation coefficient best describes the graph?
Graphic #3
A. r=1 C. r=-1
B. r=0.75 D. r=-0.75
B. r=0.75
Which point is a solution to the equation: 4x-5y=9?
A. (6,7)
B. (6,3)
C. (-3,6)
B. (6,3)
Which point is a part of the solution set to the system of inequalities?
Graphic #2
A. (5,4.5)
B. (3,2)
C. (3,3)
A. (5,4.5)
The function PPP gives the number of smartphones sold worldwide, in millions, ttt years after the year 2010. What does the equation below tell us about smartphone sales?
P(10)=1500
A) There are 10 smartphones that sold 1500 units.
B) There are 1500 smartphones that sold 10 units.
C) In 2020, 1500 million smartphones were sold worldwide.
D) In 2020, 1500 million smartphones were sold in one country.
C) In 2020, 1500 million smartphones were sold worldwide.
What math course will all of you be taking next year?
Geometry
A catering company is delivering trays of food to an event.
The table below shows the total weight in pounds, W, of x trays of food.
Which equation below could represent the total weight, W, for x trays of food?
Graphic #6
A) W=450x
B) W=900x
C) W=450+x
D) W=450-x
A) W=450x
Name TWO of Ms. Western's pets.
Dorito, Sadie, Stella
What is the value of f(-2)?
f(x)=(2x-5)/3
A. 3
B. -3
C. -1/3
D. 1/3
B. -3
Describe the domain of the function.
Graphic #9
B. All numbers from -4 to 1, not including -4.
Rewrite the equation into slope-intercept form:
3x-2y=-16
Graphic #4
C
y=3/2x+8
Which point is is the solution to the system of equations:
y=-3x+4
y=3x-2
A. (2,1)
B. (2,2)
C. (1,1)
C. (1,1)
Isabelle monitors the amount of electricity she uses in her kitchen over the course of a few weeks. Isabelle's total electricity usage (in kilowatt-hours) after days is modeled by the graph below.
What is the average rate of change between the 4th day and the 10th day?
Graphic #5
B. 17/6 kWh per day
Graphic #7
B