Answer:
18
Step-by-step explanation:
÷ 
Keep Change Flip
×
= 
7% of $5100 is 357
416.50 / 357 = 1.16
I will take 1.16 years to gain $416.50
Answer:
-10
Step-by-step explanation:
the upper right is the same (105°), therefore the left 75°
now you have 180 = 75 + x + 115
therefore: -10