Given f(x) = 6 (1 - x), what is the value of f(4)?

If f(x) = 3x-2 and g(x) =2x+1 find (f-g)(x)

Harry owes the bank money. to repay his debt, he paid $150 back to the bank each month. after 10 months, his remaining debt was $6900. what was the original amount of harry's debt? how long did it take harry to pay back his entire debt?

Ratio of circumference to diameter example plz i need to now what it looks like.