Answer:
Step-by-step explanation:
87+95+76+88+x/5=85
346+x=85x5
x=425-346
x=79
Answer:
-20
Step-by-step explanation:
y = -3x+1
if the input is 7, it means x=7 so substitute in the equation
y= -3*7+1 = -21+1= -20 which is the output
Since 9 is a factor of an unknown number, that means that that number has to be a multiple of 9. If 9 is the factor of something then that something HAS to be a multiple of 9.
Please see the pic, I'd solved in it.