Answer:
19,23
Step-by-step explanation:
9+x-7≥ 21
Combine like terms
2+x≥21
Subtract 2 from each side
2+x-2 ≥21-2
x≥19
Any number greater than or equal to 19
130 revolutions is 130×85π=34714.60cm=347.146m or 347m to the nearest metre.
1.7(j-2)
Hope it helped :)