I need a little help with my math, so here's the chart and questions. Instant Messenger Abbreviations
L8R : 48/100
Lol : 26/100
Brb : 19/100
CUL8R : 7/100

a. What fraction of these students uses LOL or CUL8R when using Instant Messenger?
b. What fraction of these students uses L8R or BRB when using Instant Messenger?
c. What fraction more of these students write L8R than CUL8R when using Instant Messenger?

Barbara has a good credit history and is able to purchase a car with a low-interest car loan. she co-signs a car loan for her friend jen, who has poor credit history. then, jen defaults on the loan. who will be held legally responsible by the finance company and why? select the best answer from the choices provided. a. barbara will be held legally responsible because she has a good credit history. b. jen will be held legally responsible because she drives the car. c. barbara will be held legally responsible because she is the co-signer. d. jen will be held legally responsible because she has a poor credit history. the answer is a

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /

Travis and paula went to lunch.travis ordered a sandwich for $7.50 and paula ordered a burger for $5.25.after lunch,they left a 15% tip for the waiter.how many money did they spend altogether?