Answer:
Option 2 50 ≤ s ≤ 100
Option 5 She could deposit $50
Option 6 She could deposit $75
Step-by-step explanation:
Let
s -----> amount of money Layla deposit into a saving account
we know that
25%=25/100=0.25
50%=50/100=0.50
so
-----> ![s\geq \$50](https://tex.z-dn.net/?f=s%5Cgeq%20%5C%2450)
-----> ![s\leq \$100](https://tex.z-dn.net/?f=s%5Cleq%20%5C%24100)
The compound inequality is
![\$50 \leq s\leq \$100](https://tex.z-dn.net/?f=%5C%2450%20%5Cleq%20s%5Cleq%20%5C%24100)
<em>Verify each case</em>
case 1) 25 ≤ s ≤ 50
The statement is false
see the procedure
case 2) 50 ≤ s ≤ 100
<u>The statement is True</u>
see the procedure
case 3) s ≤ 25 or s ≥ 50
The statement is false
Because is s ≤ 100 and s ≥ 50
case 4) s ≤ 50 or s ≥ 100
The statement is false
Because is s ≤ 100 and s ≥ 50
case 5) She could deposit $50
<u>The statement is true</u>
Because the value of s satisfy the compound inequality ![\$50 \leq s\leq \$100](https://tex.z-dn.net/?f=%5C%2450%20%5Cleq%20s%5Cleq%20%5C%24100)
case 6) She could deposit $75
<u>The statement is true</u>
Because the value of s satisfy the compound inequality ![\$50 \leq s\leq \$100](https://tex.z-dn.net/?f=%5C%2450%20%5Cleq%20s%5Cleq%20%5C%24100)
"22", "7" and "7,5" are the answers in order
6hrs = school
9hrs = sleeps = 18hrs // 24hrs ----6hrs left
3hrs = plays
6hrs = other things
playing = 12.5% -- 3/24 3/24*100
other things = 25% -- 6/24 6/24*100
77.) x= {-5, 6}
78.) x= {-4, 9}
79.) x= {5/3, 2}
80.) x= {1/9, 3}
81.) x= {-6, 18}
82.) x= {-3√3 +4, 3√3 +4}
83.) x= {-7, -3}
84.) x= {-√85 +9 /2, √85 -9 /2}
Switch the x for -3, 2, 0, and 5 so the answer will be B