she will need to mow 8 yards because 109 divided by 15 equals 7.2 but she cant just mow 7.2 yards so you round up to 8 yards

the idea being, you multiply the "x" by some power of 10 that moves the repeating part to the left of the decimal point and the split it like above.
Step-by-step explanation:
I just answered that. how often did you put that in ?
Hey There!
80+70 is 150
180
-150
is 30 so 30 must be your answer
Hope This Helps!!!
It means the scatter plot is a line with negative slope. The relation is perfectly described by a linear equation.