Mitch is buying candy bars for his friends he wants to give two candy bars to each friend and he wants to have 10 spare bars he can afford 28 candy bars

One investigating company tracked all credit card purchase during 2012 and measured two variables: (1) the type of credit card used (visa, mastercard, american express, or discover), and (2) the amount (in dollars) of each purchase. identify the level of each variable measured.

Complete the sentences. upper a decrease in current income taxes the supply of loanable funds today because it a. decreases; increases disposable income, which decreases saving b. has no effect on; doesn't change expected future disposable income c. decreases; decreases expected future disposable income d. increases; increases disposable income, which encourages greater saving upper a decrease in expected future income a. increases the supply of loanable funds today because households with smaller expected future income will save more today b. has no effect on the supply of loanable funds c. decreases the supply of loanable funds because it decreases wealth d. decreases the supply of loanable funds today because households with smaller expected future income will save less today

Alarge tank is filled to capacity with 500 gallons of pure water. brine containing 2 pounds of salt per gallon is pumped into the tank at a rate of 5 gal/min. the well-mixed solution is pumped out at the same rate. find the number a(t) of pounds of salt in the tank at time t.