Student scored 83 and 91 on her first 2 quizzes. Write and solve a compound inequality to find possible values for third score that would give her an average between 85 and 90, inclusive.

Question

solomonzelman · Answer

$\Huge\color{blue}{ \bf    85≤	\frac{83+91+x}{3}  			≤90	}$   multiply each side (left, center and right) times 3.

$\Large\color{blue}{ \bf    225≤	83+91+x  			≤270	}$

$\Large\color{blue}{ \bf    225≤	174+x  			≤270	}$  subtract 174 from eerywhere,

$\Large\color{blue}{ \bf    51≤	x  			≤96	}$

anonymous · Answer

please help soon as you can. I will need this for tomorrow morning. thanks.

anonymous · Answer

Thank you very much for kind help. God bless.

solomonzelman · Answer

God bless you to. ( I also believe in God )

G☼☼D LUCK !