Your mom opens an account to save money for a family vacation. the account earns an annual interest rate of 4%. she earns $37 in simple interest after 6 months. how much money did she put in the account when she opened it? use the formula: i = prt.

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

Is each relation a function? if so, state whether it is one-to-one or many-to-one. 3. (-4,7), (-3,5), (1,4), (3,-8), (5,-11) 4. (-4,8), (-2,4), (0,1), (2,4), (4,8) 5. (-2, 1), (-2,3), (0,-3), (1,4), (3,1)

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?