Answer: To find the cost of the lowest delivery fee among the three pizza restaurants, we need to compare the constants in the functions for each restaurant. The functions are as follows:
Q(x) = 17.49x + 2.50
R(x) = 15.99x + 3.50
S(x) = 16.50x + 2.99
The constant term in each function represents the delivery fee. So, we need to find the smallest constant among the three.
Comparing the constant terms:
Q(x) = 2.50
R(x) = 3.50
S(x) = 2.99
Therefore, the cost of the lowest delivery fee is $2.50.
To find the cost of the least expensive pizza without a delivery fee, we need to consider the coefficient of x in each function. Since the coefficient of x determines the cost per pizza, we need to find the smallest coefficient among the three functions.
Comparing the coefficients of x:
Q(x) = 17.49
R(x) = 15.99
S(x) = 16.50
Therefore, the cost of the least expensive pizza without a delivery fee is $15.99.
Explanation: