Answer:
negative
Step-by-step explanation:
calculating the z score by subtracting the mean and dividing by the standard deviation
(55-70)/10= -1.5
It's negative
Set up an equation to solve.
70% of original price equals $550, the amount Susan is paying.
0.70x = 550
Answer:
B .on the contrary...........
As you can see, every time x increases by 2, y decreases by 5.
So, we have
Multiplying by 2 and then adding 10 145*2=290+10=300
300*2=600+10=610
610*2=1220 + 10=1230
x=2 y=10
x+y=12
