solving systems of equations by substitution and we are stuck

solving systems of equations by substitution and we are stuck

A woman invests a sum of money at 6% and 3000 more than this 9%.

a merchant mixes some candy worth $3.50 per pound with cheap stuff worth $1.00 per pound. There are 10 more pounds of cheap stuff than the more expensive candy.

Kenisha sells athletic shoes part-time at department store. She can earn either $500 per month plus a 4% commission on her total sales, or $400 a month plus a 5% commission on total sales. Write...

A traveler is walking on a moving walkway in an airport. The traveler must walk back on the walkway to get a bag he forgot. The traveler's ground speed against the walkway is 3ft/s and 7ft/s with...

How do I figure this out the 2 equations and solvenfornthe variables

A chef is using a mixture of two brands of Italian dressing. The first brand contains 5% vinegar, and the second brand contains 15% vinegar. The chef wants to make 390 milliliters of a dressing that...

A group of 148 people is spending five days at a summer camp. The cook ordered 12 pounds of food for each adult and 9 pounds of food for each child. A total of 1,410 pounds of food was ordered.

i need help with this word problem. I do not know how to do it

This is a algebra 2 word problem for solving systems

The equations that are first gotten should be 2 equations for a system. If the work could use the substitution method, that'd be great. Thanks!

3y+x+5=3 I don't know how to do this, and I was wondering if you could help me step by step.

Systems help...

Please help me I can't solve this.

its the systems of equation except its the substitutional method

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