The domain for f(x) and g(x) is the set of all real numbers.

let f(x) = 3x + 5 and g(x) = x2.

find (f + g)(x).

(f + g)(x) = x² + 3x + 5

Step-by-step explanation:

There are two different functions f(x) and g(x) with domain the set of all real numbers and given by  

f(x) = 3x + 5 and  

g(x) = x²

Now, we have to find the function (f + g)(x) which is obtained by simple arithmetic addition of the two functions.

Therefore, (f + g)(x) = f(x) + g(x) = (3x + 5) + (x²) = x² + 3x + 5 (Answer)

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490

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