Review Five #1 - January 2015

(#1) The owner of a small computer repair business has one employee, who is paid an hourly rate of $22. The owner estimates his weekly profit using the function P(x) = 8600 - 22x. In this function, x

• computers repaired per week

• hours worked per week

• customers served per week

• days worked per week

(#3) Which equation has the same solutions as 2x² + x - 3 = 0?

• (2x - 1)(x + 3) = 0

• (2x + 1)(x - 3) = 0

• (2x - 3)(x + 1) = 0

• (2x + 3)(x - 1) = 0

(#4) Krystal was given $3000 when she turned 2 years old. Her parents invested it at a 2% interest rate compounded annually. No deposits or withdrawals were made. Which expression can be used to determine how much money Krystal had in the account when she turned 18?

• 3000(1 + 0.02)¹⁶

• 3000(1 - 0.02)¹⁶

• 3000(1 + 0.02)¹⁸

• 3000(1 - 0.02)¹⁸

(#5) Which table of values represents a linear relationship?

• 
• 
• 
• 

(#6) Which domain would be the most appropriate set to use for a function that predicts the number of household online-devices in terms of the number of people in the household?

• integers

• whole numbers

• irrational numbers

• rational numbers