If f(x)=4^x-1+6 and g(x)=2x-5, what is (f-g)(x)? a. (f-g)(x)=4^x-1-2x-1 b. (f-g)(x)=4^x-1-2x+11 c. (f-g)(x)=4^x-1-2x-11 d. (f-g)(x)=4^x-1-2x+1

Darcy deposited $390 into a savings account. as long as the account balance remains at or above $150, she does not have to pay a service fee for the account. for how many months can she withdraw $40 a month without having to pay service fees? a) 3 b) 5 c) 6 d) 9