Kevin=k
Daniel=d
k=4d
k=d+6
4d=d+6
4d-d=6
3d=6
d=2
k=d+6
k=2+6
k=8
Daniel is 2
Kevin is 8
Answer:
make sure you do order of operations
2456789 + 8 +2
<u>2456799</u>
2 less than a number n is (n - 2 ) and 3 times this is 3(n - 2 ), thus
3(n - 2) ≥ 5n ( greater than or equal to 5 times n )
3n - 6 ≤ 5n ( subtract 3n from both sides )
- 6 ≥ 2n ( divide both sides by 2 )
- 3 ≥ n or n ≤ - 3
Since n is less than or equal to - 3 use bracket ]
n ∈ ( - ∞, - 3 ] ← solution set