Answer:
x = -63
Step-by-step explanation:
3x + 18 = 147
3x = 129
x = 43
A.) y = 0.4x^(2) + 3.4x + 4
x = -5
y = -3
(-5 , 2 )
hello :
×-5y=-15
5y = x+15
y = (1/5)x+3 for x= - 5 y = (1/5)(-5) +3 so : y = 2
√(81/9)
(It is equal to 3)