F (x) is an exponential function with these features: f (x) is increasing, the y-intercept is (0,1), and f (2) = 49. Which function could be f (x)?

A: f(x)=(1/3)^x

B: f(x)=7^x

C: f(x)=3^x

D: f(x)=(1/7)^x

Choose the right classification of 5x + 3x^4 - 7x^3 + 10 by number terms and he degree 1. third degree polynomial 2. fourth degree polynomial 3. sixth degree polynomial 4. first degree binomial

If f(x)=3 over x+2 - square root x-3 then f(7)=

Alexandra drove from michigan to colorado to visit her friend. the speed limit on the highway is 70 miles per hour. if alexandra's combined driving time for the trip was 14 hours how many miles did alejandra drive?