Solve y=x2 +7 fоr x.
оа. x = t /у +7
ов. x= y +7
ос. x=y-7
od. х = + y -7

x = ±

Step-by-step explanation:

Given

y = x² + 7 ( subtract 7 from both sides )

y - 7 = x² ( take the square root of both sides, thus

x = ±

answer:  

123455421

step-by-step explanation: easy

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.