Sam $13.33, Jenna $20, Marcus $40, Joseph $80.
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Answer:
15%
Step-by-step explanation:
Let
Selling price = SP
Cost price = CP
If CP = 100
Profit = selling price - cost price
x% = SP - x% of 100
x% + 100x% = SP
SP = 100 (1 + x/100) (1)
If CP = 92
SP = 92 (1+ {x+10}/100)
Equate both SP
100 (1 + x/100) = 92 (1+ {x+10}/100)
100 + x = 92 + [{23/25} * (x+10)]
{2/25}x = 30/25
x = 30/25 ÷ 2/25
= 30/25 × 25/2
= 30/2
x = 15%
Answer:
A iS THE ANSWER
Step-by-step explanation:
x y x^2 xy
2 100 4 200
4 83 16 332
6 50 36 300
8 35 64 280
10 23 100 230
∑x = 30; ∑y = 291; ∑x^2 = 220; ∑xy = 1,342; n = 5
The <span>least squares regression line equation is given by y = bx + a = -10.1x + 118.9.</span>