Maria and her sister each have a salad and a drink for lunch at a restaurant. a salad costs $4.75 and a drink costs $1.65. what was the total cost of the meal with a 15% tip?

7.36

Step-by-step explanation:This one is pretty easy. Add 4.75 to 1.65 which is 6.4 also 6.40. You can make a porportion out of it. 15/100=x/6.40. That way then you'll do

100x=69

96/100

0.96

so, with the meal it will = 7.36

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