Hi:) I need help with 11(a) , thanks!:))

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?

If f(x) = 4x - 3 and g(x) = x + 4, find (f - g) (x)

Acentral angle measuring 160 degrees intercepts an arc in a circle whose radius is 4. what is the length of the arc the circle formed by this central angle? round the length of the arc to the nearest hundredth of a unit. a) 4.19 units b) 6.28 units c) 12.57 units d) 12.57 square units