Answer:
315
Step-by-step explanation:
10% of 350 is 35 so 35 times 9 would equal <u><em>315</em></u>
I think it’s A. i’m not very sure tho
Yes. I totally agree with that statement. 10/10
Answer: 
Step-by-step explanation:
Let be "x" the height inches (in the model) of a 84 foot building.
According to the information provided in the exercise, we know that the height of a two-story building is 21 feet and in the scale model its height is 3 inches.
Knowing this, we can set up the following proportion:

The final step is to solve for "x" in order to calculate its value. We get that this is:

Therefore, an 84 foot building will be 12 inches tall in the model.
Answer:
d.x=-8 and x=-10
Step-by-step explanation: