Which expression is equivalent to (f + g)(4)? f(4) + g(4) f(x) + g(4) f(4 + g(4)) 4(f(x) + g(x))

(f + g)(x) = f(x) + g(x) therefore (f + g)(4) = f(4) + g(4)

Step-by-step explanation:

For any functions f and g on x , the sum of functions is equivalent to

OR

Thus, for x=4 we have

The expression is equivalent to

f(4) and g(4) means that we should find the value of our function when x equals 4.

(f+g)(4) means we should find the value of our function as sum, when x equals 4.

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

a

step-by-step explanation:

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