Page 120 - TB_6B
P. 120
3 . Write an equation to represent the function.
a. Kate has a plan for her cell b. Thomas’ dad needs to pay
phone. It has a base charge of $2 and additional $ 2.5 per hour
$20 and an additional $1 per to park a car.
minute.
Let x = the minutes used. Let x = the hours parked.
Let y = the cell phone charge. Let y = the parking lot fee.
y = x 20
c. There is a water tank at d. A square can be made with
Thomas’ school that contains 4 matchsticks, and 2 squares
60 L of water, and 3 L of water can be made with
is consumed per minute. 7 matchsticks.
Let x = the minutes passed. Let x = the number of squares.
Let y = the amount of water left. Let y = the number of matchsticks.
28. X and Y 109
a. Kate has a plan for her cell b. Thomas’ dad needs to pay
phone. It has a base charge of $2 and additional $ 2.5 per hour
$20 and an additional $1 per to park a car.
minute.
Let x = the minutes used. Let x = the hours parked.
Let y = the cell phone charge. Let y = the parking lot fee.
y = x 20
c. There is a water tank at d. A square can be made with
Thomas’ school that contains 4 matchsticks, and 2 squares
60 L of water, and 3 L of water can be made with
is consumed per minute. 7 matchsticks.
Let x = the minutes passed. Let x = the number of squares.
Let y = the amount of water left. Let y = the number of matchsticks.
28. X and Y 109
