On Saturday, a local hamburger shop sold a combined total of 315 hamburgers and cheeseburgers. The number of cheeseburgers sold was two times the number of hamburgers sold. How many hamburgers were sold on Saturday

105 hamburgers were sold on Saturday.

Step-by-step explanation:

Let x represent the number of hamburgers that were sold on Saturday.

Let y represent the number of cheeseburgers that were sold on Saturday.

On Saturday, the local hamburger shop sold a combined total of 315 hamburgers and cheeseburgers. This means that

x + y = 315- - - - - - - - - -1

The number of cheeseburgers sold was two times the number of hamburgers sold. This means that

y = 2x

Substituting y = 2x into equation 1, it becomes

2x + x = 315

3x = 315

x = 315/3

x = 105

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33