La o fabrică de grisine, fiecare grisină trebuie tăiată în bucăţi mai mici, astfel încât să încapă în cutii (nu toate grisinele se taie în același număr de bucăţi). Ştim că au fost făcute 1650 de tăieturi și s-au obţinut 3662 de bucăţi. Dacă n este numărul grisinelor care au fost tăiate, atunci suma pătratelor cifrelor lui n este egală cu: A. 5 B.10 C. 9 D. 8

first option

a function is a relation in which an input is paired with exactly one output.

so, let's find the right answer.

in our first option, our inputs are january, february, and march. the outputs are 30, 28, and 25. each input has it's own output. this is correct!

our second option we know is incorrect, because ms. valverade has two outputs, dogs and cats. this is not a function.

our third option is incorrect as well. the yellow square has two ouputs, the square and the triangle.

lastly, in our fourth option, we see the number 7 two times with a different output. therefore, this is not a function.

remember: each input must be paired with only one output!

what is all that apply?

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls