I need help with this please help me

Here’s your answer;
a.f(2)
given,
f(x)=5x-6
now,put the value of x=2,then we have
f(2)=5*2-6
=10-6
f(2)=4.

At a constant it will take one hour to travel 32 mi.at that speed it will take 1/2 hr to travel the remaining 16 mi.it will take 1+1/2 hr to travel the 48mi @ 32mph.so 1 hr = 60 min& 1/2 hr = 30 min1+1/2 hr = 90 min.there are 60s in each 90 × 60 = 3600 seconds.the real question seriously is he why are they driving so slow? ! lol.