Which equation has the solutions x=1+or- /5?

a. x2 + 2x + 4 = 0
b. x2 – 2x + 4 = 0
c. x2 + 2x – 4 = 0
d. x2 – 2x – 4 = 0

On friday, there were x students at the baseball game. on monday, there were half as many students at the game as there were on friday. on wednesday, there were 32 fewer students at the game as there were on friday. which expression could represent the total number of tickets sold for all 3 games?

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!

Find the solution to this system 2,1 1,-2 1,2 -1,2