Answer:
B. 
Step-by-step explanation:
Simplify the given expression to determine its equivalent expression in the given options.






(x - 1) cancels (x - 1)




6 I think because 6•3=18, 6•7=42, and 6•2=12
Answer:
A
Step-by-step explanation:
Total investment=$2500
Let say David earned 5% profit and Harry earned 3% profit.
If <u>David</u> invested y dollar in mutual fund then <u>Harry</u> would invest,
Harry would invest,$(2500-y)
Total profit would equal to sum of 5% of money <u>David</u> invested and 3% of money <u>Harry</u> invested,
So,
5% × y +3% ×(2500-y)=<u>total profit</u>
0.05×y+0.03×(2500-y)=$111
0.05y+0.03×2500-0.03y=111
0.02y+75=111
0.02y=111-75
y=36/0.02
y=$1800
which is the amount <u>David</u> invested.
The amount invested by <u>Harry</u> would be,
=$(2500-1800)
=$700
Let the number of red beads be x, then the number of yellow beads is 50 - x.
Then, 6/9 = x/(50 - x)
9x = 6(50 - x) = 300 - 6x
15x = 300
x = 300/15 = 20
Therefore, we expect 20 red beads in the bag.