Step-by-step explanation: x= 2-y then plug that in for x so y= 2-y+2;
y=4-y; -4y=-y; y=-1/4
Answer: 0.80
Step-by-step explanation:
Given : The owner of the West End Kwick Fill Gas Station wishes to determine the proportion of customers who pay at the pump using a credit card or debit card.
He surveys 100 customers and finds that 80 paid at the pump.
Then, sample proportion= 
Since , the best point estimate for population proportion is sample proportion.
Therefore, the estimated value for population proportion =0.80
The first step would be :
E) 3x + (2x + 4) = -7
Answer:
D. 0.65
Step-by-step explanation:
0.05 x 5=0.25
0.01 x 5=0.05
0.07 x 5=0.35
0.25+0.05+0.35=0.65
they all must pay 0.65 each