Y=300+30xy=15x
y=300−30xy=15x
Question 8 (1 point)
Mikey has $100 to spend...
![subject](/tpl/images/cats/mat.png)
Mathematics, 06.05.2021 17:30 fatherbamboo
Y=300+30xy=15x
y=300−30xy=15x
Question 8 (1 point)
Mikey has $100 to spend on books. She wants to buy at least 14 books. Hardback books cost $15.00 and paperback books cost $7.00.
Represent the scenario as a system of inequalities.
Question 8 options:
x+y≥10015x+7y≤14
x+y≥1415x+7y≤100
x+y≤10015x+7y≥14
x+y≤1415x+7y≥100
Question 9 (1 point)
If you were to solve the system using elimination, what could be the first step to solving?
3x−7y=102x−5y=12
Question 9 options:
Multiply the first equation by 2 and the second equation by 3.
Multiply the first equation by -2 and the second equation by 3.
Multiply the first equation by 5 and the second equation by 7.
Multiply the first equation by-22 and the second equation by -3.
Question 10 (1 point)
Solve by graphing.
4x−6y=86x−9y=15
Question 10 options:
(1, 7)
(7, 1)
No solution
Infinite solutions
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