I am pretty sure that it is the second option :)
Given:
Principal = 17,000
rate = 10.7%
term = x/360
interest = 1,121.72
Interest = Principal * rate * term
1,121.72 = 17,000 * .107 * x/360
1,121.72 = 1,819x / 360
1,121.72 * 360 = 1,819x
403,632 / 1,819 = x
221.90 = x
Lauren Michelle will have to wait 222 days for her investment to earn $1,121.72
Given:
Principal = x
rate = 9%
term = 10 months
interest = 1,687.50
Interest = Principal * rate * term
1,687.50 = x * 0.09 * 10/12
1,687.50 = x * 0.075
1,687.50 / 0.075 = x
22,500 = x
The amount Sandra Leatherwood invested was $22,500.
Answer:
B.) 6
Step-by-step explanation:
Given the data:
64 53 60 60 56 58 51 55 60
Reordered data : 51, 53, 55, 56, 58, 60, 60, 60, 64
Interquartile range = upper quartile (Q3) - Lower quartile (Q1)
Q3 = 3/4(n+1)th term
n = sample size = 9
Q3 = 3/4(9+1) = 3/4 (10) = 30/4 = 7.5 th term
Q3 = 60
Q1 = 1/4 (n + 1) th term
Q1 = 1/4(9+1) = 1/4 (10) = 10/4 = 2.5 th term
Q1 = (53 + 55) / 2
Q1 = 54
Q3 - Q1
60 - 54 = 6
The two equations are
2x+3y=12............(1)
x-y-1=17................(2)
x=17+y+1=18+y
x=18+y.............(3)
plugging value of x from (3) in (1)
2(18+y)+3y=12
36+2y+3y=12
36+5y=12
5y=-24
y=-24/5=-4.8
plugging this y in equation (3)
x=18+y = 18-4.8 =13.2
Answer : x=13.2 and y=-4.8