The answer is 6.375 hope it help

and you can simply solve that for "x"
Answer:
principal (p)=$1895
time (t)=4years
rate(r)=7.9%
Step-by-step explanation:
- compound interest amount=p((1+r/100)^t-1)=$1895((1+7.9/100)^4-1)=$1895×((1.355)-1)=$1895×(0.355)=$672.725
- simple interest=ptr/100=$1895×4×7.9/100=$598.82
X^2 + 6x +9
(x+3) (x+3)
x+3 = 0
x = -3
answer: x=-3
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This site will tell what are sines as well as your question for what sine B is