QUESTIONS AND VERIFIED ANSWERS
0.Your business currently has 12 employees. You plan to add three new
employees each year for the life of your business. Which function below models
your plan? Note that N represents the number of employees while y=0
corresponds to the current year.
A. N(y)=12y+3
B. N(y)=36+y
C. N(y)=12+3y
D. N(y)=12-3y
C
1.Which choice is a variable?
A.The number of states in the United States of America
B.The cost of your daily newspaper
C.The amount a teenager makes babysitting
D.Your shoe size
C
2.Which choice is a quantitative variable?
A. S, representing the number of regular weekly shipping deliveries your
company's trucks make
B. P, representing the monthly profit based on the number of customers who
needed plumbing services
C. R, representing the monthly rent for your company's office building
D. M, representing the federal minimum wage
B
3.Which choice is a variable?
A.The operating system on your phone
B.The amount a babysitter charges per hour
C.The name of the largest mountain range in the United States
D.The colors and styles of your shoes
D
2.Which choice is a quantitative variable?
, A. S, representing the number of regular weekly shipping deliveries your
company's trucks make
B. P, representing the monthly profit based on the number of customers who
needed plumbing services
C. R, representing the monthly rent for your company's office building
D. M, representing the federal minimum wage
B
4.In a lawn-mowing business, the amount of time an employee spends mowing a
lawn depends on the size of the lawn. It might also depend on some other factors.
Which choice represents a qualitative variable in this lawn-mowing business?
A. G, representing the amount of gas needed to mow a given lawn
B. W, representing the number of hours the employee spends working each day
C. H, representing the hilliness of the lawn
D. M, representing the maximum amount of lawn that a given mower can
complete per hour
C
5.Which variable is related to the variable temperature?
A. Pen sales
B. Computer sales
C. Hot chocolate sales
D. Book sales
C
6.The number of years someone regularly deposits money in a savings account is
related to the amount of money in the account. T/F
T
7.The amount of food prepared for a catered event depends on the number of
people attending.
Which variable is the independent variable?
A. The amount of food prepared
B. The number of people attending
B
8.You own a car wash that charges $10 for each car that goes through. If you
wash 50 cars a day, your revenue is $10×50=$500. If you only wash 20 cars a day,
your revenue is $10×20=$200.
Which variable is the independent variable?