Answer:
7 years
Step-by-step explanation:
A = P (1 + r)^(n)
where A is the final amount, P is the initial amount, r is the interest rate, and n is the number of times of compounding.
Compounded quarterly means compounded 4 times per year. So the effective interest rate per compounding is:
r = 0.07 / 4
r = 0.0175
Given that A = 8000 and P = 5000:
8000 = 5000 (1 + 0.0175)^n
1.6 = 1.0175^n
log 1.6 = n log 1.0175
n = (log 1.6) / (log 1.0175)
n ≈ 27.1
Rounding up to the nearest whole number, it takes 28 compoundings. Since there's 4 compoundings per year:
t = 28 / 4
t = 7
It takes 7 years.
Answer:
21
Step-by-step explanation:
(7x2)+(1.5x2)+(2x2)
Answer:
6 hours
Step-by-step explanation:
if it costs 12 dollars to rent it at first then that subtracts 12 dollars from the total 30.
this leaves you with 18 buck, divide 18 by 3 and you get 6, she had it for 6hours
Answer:
y = 1/2x - 6
Step-by-step explanation:
slope = 1/2 = m
lets find your y-intercept using slope intercept form: y = mx + b using the points they gave us (6, -3)
y = mx + b; plug what we know to find b, which is our y-intercept.
-3 = 1/2(6) + b
-3 = 3 + b
-6 = b
Now you have all you need to write your equation
y = mx + b
y = 1/2x - 6
Answer:
17.5
Step-by-step explanation:
17×4=68; half of 4 is 2; 68+2=70
