Solve for t.
t - 7.4 = 1.6

Aquantity with an initial value of 3900 decays exponentially at a rate of 35% every hour. what is the value of the quantity after 0.5 days, to the nearest hundredth?

The square root of 9x plus 7 plus the square rot of 2x equall to 7

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.