At work one day erica received 55 packages. speedee delivery delivered four times as many as a ralph's express while ralph's express delivered five more than send quick package service how many packages did each service deliver to erica

5 packages

Step-by-step explanation:

let x= number of packages from SQPS

x+5 = number of packages from RE

3(x+5) = number of packages from SD

x + x+5+3(x+5) = 45

x+x+5 + 3x + 15=45

5x + 20 = 45

5x = 25

x=5 packages from SQPS

x+5 = 10 packages from RE

3(x+5) = 30 packages from SD

Send quick 55

Speedee 220

Ralph's 1100

Step-by-step explanation:

(x, y)→(x − 8, y − 7)

step-by-step explanation:

enjoy!

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.