I can help with the second part of your question. The first part is missing something.
To find the amount of interest, just multiply the amount by the given percent.
200 x 0.03 = 6
150 x 0.03 = 4.5
6 - 4.5 = 1.5 is the additional amount of interest.
Answer:
x = 54
Step-by-step explanation:
These angles are complementary because they add up to 90:
x - 7 + 43 = 90
x + 36 = 90
x = 90 - 36
x = 54
y = nx/4 +7/4
If the line has a slope equals to 2, then
n/4 = 2
n = 8
Blue Box: 6.03
Orange Box: -3