Megan orders a quesidilla and a drink for lunch at a resturant. The quesidilla costs $6.75 and a drink costs $2.45. How much tip should Megan leave the server if she wants to tip her 20%? A. $9.20
B. $1.84
C. $11.04
D. $7.36

c

Step-by-step explanation:

Abby bought 3 sweat shirts and 7 t shirt

Step-by-step explanation:

Step 1

Let sweat shirt be represented as s

and t shirts be represented as t

such that the total  umber of items bought which equals 10 can be written as

s+ t= 10 equation 1

and total price of the gear with each item costing  $25 on sweatshirt $11 on  t-shirts be expressed as

25 s+ 11 t = 152 equation 2

Step 2

s+ t= 10equation 1

25s+ 11t= 152equation 2

By elimination method , multiply equation 1 by 10  and subtract equation 2 from it

25 s+ 25t= 250 equation 3

-25s + 11t= 152equation 2

14t=98

t=98/14= 7

To find s, using equation 1

s+t=10

s= 10-7= 3

Abby bought 3 sweat shirts and 7 t shirt