The school cafeteria sells two kinds of wraps: vegetarian and chicken. The vegetarian wrap costs $1.00 and the chicken wrap costs $2.50. Today they made $191.50 from the 103 wraps sold. How many of the wraps sold were vegetarian?

Step-by-step explanation:

v+2.5c=191.5 and c+v=103, so c=103-v, using this c in first equation gives you

v+2.5(103-v)=191.5

v+257.5-2.5v=191.5

-1.5v=-66

v=44

So 44 vegetarian wraps were sold.

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