What does 3x + 23 = 10x - 12 equal

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Darragh has a golden eagle coin in his collection with a mass of 13.551\,\text{g}13.551g. an uncirculated golden eagle coin has a mass of 13.714\,\text{g}13.714g.

Vertical angles must check all that apply