O borrow​ money, you pawn your guitar. Based on the value of the​ guitar, the pawnbroker loans you ​$840 .
One month​ later, you get the guitar back by paying the pawnbroker ​$1270
.
What annual interest rate did you​ pay?

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

Suppose that the price p, in dollars, and the number of sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 pxequals56. suppose also that p and x are both functions of time, measured in days. find the rate at which x is changing when xequals2, pequals6, and startfraction dp over dt endfraction equals1.5.

Jonathan puts $400 in a bank account. each year the account earns 6% simple interest. how much interest will be earned in 5 years?