1.) A carpenter has boards of lengths 24, 36, and 42 inches that must be cut into smaller boards of equal length, with no scrap wood left over. What is the longest length of boards he can cut?

2 inches
4 inches
12 inches
6 inches

2.) Solve -2t + 5 ≥ -7.

t ≤ -6
t ≤ 6
t ≥ -6
t ≥ 6

3.) Luis needs to run at least 150 miles in order to go with the cross country team to a summer training camp. He has forty days to pre-train for the camp.

Which inequality can be used to find how many miles Luis must run each day to meet this goal?

40 m ≥ 150
40 m ≤ 150
40 m > 150
40 m < 150

Questions four and five is the screenshots. Please help me! BRAINLEST, 5 STARS AND A THANKS!