2x+6=12
25-3r+2=3
4(t-3)=8
4c-12=8
Answer:
12.25 and 12.6 per hour
Step-by-step explanation:
For number 2, you take the amount of cookies, x, and divide it by the number of hours, a, and you get x / a = 12.25 or 12.6
For number 3, you do the same as in number 2, you take the pages read, x, divided by the time, a, and get x / a = s
s = 2 and 0.5
Answer: 0.0432
Step-by-step explanation:
Formula of Margin of Error :-

Given : Sample size : n= 400
The proportion of individuals use public transportation.=
Level of confidence = 0.95
Significance level : 
Critical value : 
Substitute the values in the given formula , we get

Hence, the margin of error for the confidence interval for the population proportion with a 95% confidence level. = 0.0432
Answer:
Pizzas: $8, Breadsticks: $3
Step-by-step explanation:
1. Write an equation.
Let the variables p = price of pizzas, and b = price of breadsticks
The equation: 3p + 2b = $30 for the first customer. The equation: 4p + 3b = $41 for the other customer.
2. Use the Elimination Method.
(4p+3b=41) x3 = 12p+9b=123
- (3p+2b=30) x4 = 12p+8b = 120
------------------------------------------------
8b = 3
Pizzas: $8
Breadsticks: $3
I think the answer is maybe A