f(4) = 3×4^2+15
4^2=16
3×16
48+15
63
f(4)=63
Answer:
Step-by-step explanation: f(4)=3x^2+15
3(4)^2+15
3*16+15
3*16=48
48+15=63
x>5
Step-by-step explanation:
5-5=0 this is wrong. 5.0002-5= is greater than zero.
281-28.5=252.5
252.5 divided by 0.4=631.25
X=631.25
