[ (-5) + (-4) ]x • (-5) - (-7)x + (-3)x

49x

Step-by-step explanation:

first, i rewrite the equation, removed the parentheses, and multiplied it all out.

(-5-4)x x (-5) + 7x - 3x

then, i calculated it.

-9x x (-5) + 7x - 3x

then, i multiplied and calculated again.

45x + 7x - 3x = 49x

i can you with this question sweetie!

step-by-step explanation:

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value