The service tip for the waiter is 20%. the total cost of a meal is calculated as c + 0.20c. how much would you have to pay if you have a meal that costs $21.00?

For this case we have the following function, to calculate the total cost of the meal, including 20% of the tip:

They tell us that a meal costs $ 21.00. That is,

Thus, the total cost of the meal is 25.2

$ 25.2

the answer is (-4,-4)

hope this ! : d

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x