Answer:
D) P = 8b - 1000
Step-by-step explanation:
Think about it,
First off
If they spent 1000 from just buying the cookies. When you buy something you lose money. So that's -1000.
Secondly,
If they charged $8 per box that would cost an additional eight dollars each time a cutomer perchased a box. Another way to show addition is multiplication.
Ex if someone bought 7 box and 8 dollars each it could be shown as either:
1. 7 + 7 + 7 + 7 + 7 + 7 + 7 + 7
2. 8 + 8 + 8 + 8 + 8 + 8 + 8
3. 7 x 8 or 8 x7
So 8b - 1000 would make the most sense.
.11+.17=.28
sorry if this is wrong i didn't know if you wanted algebraic form or not
Answer:
<h2>x = 17</h2>
Step-by-step explanation:
3(x - 7) = 30 is our equation, since we take 7 away from the number and then multiply the result by 3.
3x - 21 = 30
Add 21
3x = 51
Divide by 3
x = 17
To check.
3(17 - 7(
3(10)
30 = 30 Correct
Answer:
Step-by-step explanation:
y=1x+10
y=15x+2
Answer:
(0.1361 ; 0.2239)
Step-by-step explanation:
n1 = 1400 ; p1 = 0.50 ; n2 = 1320 ; p2 = 0.38
Confidence interval = mean ± margin of error
Mean = p1 - p2
Point estimate :
p1 - p2 = 0.50 - 0.38 = 0.18
Margin of Error (MOE) = Zcritical * S. E
Standard Error(S. E) :
Sqrt[(p1(1-p1)/n1) + (p2(1-p2)/n2)]
(p1(1-p1)/n1) = 0.50(0.50) / 1400 = 0.0001785
(p2(1-p2)/n2) = 0.38(0.62) / 1320 = 0.0001784
S. E = sqrt(0.0001785 + 0.0001784)
S. E = sqrt(0.0003569)
S. E = 0.0188917
Zcritical at 98% = 2.326
MOE = Zcritical * S. E
MOE = 2.326 * 0.0188917
MOE = 0.0439420942
MOE = 0.0439
Confidence interval = mean ± margin of error
Confidence interval = 0.18 ± 0.0439
Lower boundary = (0.18 - 0.0439) = 0.1361
Upper boundary = (0.18 + 0.0439) = 0.2239
(0.1361 ; 0.2239)
