#3 please. Thank you
1 answer:
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Answer:
Step-by-step explanation
simplify step-by-step.
2(x+7)−(−18+
4
5
)
Distribute the Negative Sign:
=2(x+7)+−1(−18+
4
5
)
=2(x+7)+(−1)(−18)+−1(
4
5
)
=2(x+7)+18+
−4
5
Distribute:
=(2)(x)+(2)(7)+18+
−4
5
=2x+14+18+
−4
5
Combine Like Terms:
=2x+14+18+
−4
5
=(2x)+(14+18+
−4
5
)
=2x+
Given that initial time for jogging is,
After each week the time is increased by
This gives an arithmetic sequence.
To find n such that,
Therefore,
So,
Therefore, 9 weeks before you are up to jogging 70 minutes.
2
Step-by-step explanation:
it kinda like subtracting to get your answer