QF2 Prep part 4

The student council of a school wants to buy custom T-shirts with the school mascot printed on the shirts in 3 colors. They are buying the T-shirts from a company that charges $4.95 per shirt plus $0.45 per color used on each shirt. The company also charges an initial set-up fee of $55.00. The equation c= (4.95 + 1.35)n+ 55 is used to compute c, the total cost of purchasing n shirts. What is the greatest number of T-shirts the student council can purchase from this company for $533.80?

• 76

• 93

• 96

• 118

A partially-filled water tank contains 300 gallons of water. Water is then pumped into the tank at a constant rate. After n minutes, the amount of water,W, in the tank is W = 300+9n gallons. After how many minutes will W = 450 gallons?

• 55

• 16 2/3

• 33 1/3

• 50

Which distance can be modeled as a linear function of time?

• the distance traveled by a car moving at 40 miles per hour

• the distance traveled by a train decelerating by 2 miles per hour per minute

• the distance traveled by a car as it comes to a stop over a length of 100 meters

• the distance traveled by a train as it increases speed from 30 to 35 miles per hour

What are the x- and y - intercepts of the line y = 2x − 12?

• x-intercept = −6; y-intercept = 12

• x-intercept = 6; y-intercept = −12

• x-intercept = −12; y-intercept = 6

• x-intercept = 12; y-intercept = −6

• 2y−x=−2

• 2y−x=1

• y−2x=−1

• y−2x=2

What is the y-intercept of the line 2x+5y=10?

• -2

• -2/5

• 2/5

• 2

• y=x+35

• y=x+60

• y=35x+25

• y=35x+60

An amusement park charges a $20 admission fee and $3 for each ride. Which equation can be used to determine c, the total cost of a day at the amusement park, based on n, the number of rides?

• c=3n+20

• n=3c+20

• c=20n+3

• n=20c+3

• The exchange rate rose by 0.007 each week.

• For each 0.007 Euro, the exchange rate rose by $1.

• When the value of the week was zero, the exchange rate was 0.007.

• Each week, the value of the exchange rate was 0.007 of its value from the previous week.

• y>-3

• y<-3

• y>3

• y<3