23245 + 21.50b = 46389 + 10.50b
21.50b - 10.50b = 46389 - 23245
11b = 23144
b = 23144/11
b = 2104 <== the cost will be the same at 2104 books
Answer:
<em>"Consecutive y-values change by multiplying previous value by a constant amount. So, the table represents an exponential function."</em>
Step-by-step explanation:
In reality, the table represents an exponential function instead of a linear function, since values on domain change arithmetically at constant rate, whereas values on range change geometrically at constant rate.
Correct phrase may be:<em> "Consecutive y-values change by multiplying previous value by a constant amount. So, the table represents an exponential function."</em>
he studied for 495 minutes. 165 minutes a day.
Answer:
-12.75 , -22
Step-by-step explanation:
8x - 6y = 30
8x = 30 + 6y
-20 - 16x + 7y = 30
-2(30 + 6y) + 7y = 50
-5y = 50+60
y = -22
7x = 30 - 6(22) = -102
x = -12.75
Answer:
Lower limit for confidence interval=0.5091
Upper limit for confidence interval=0.6001
Step-by-step explanation:
We have given,
x=254
n=458
Estimate for sample proportion= 
Level of significance is =1-0.95=0.05
Z critical value(using Z table)=1.96
Confidence interval formula is
Lower limit for confidence interval=0.5091
Upper limit for confidence interval=0.6001
