maths urgent pls

[pachin]

no1.The sum of $3000 is placed in the savings account. If money worth 6% compounded semi annually, what is
he balance in the account after 7 year? Assume no other deposit and no withdrawals are made.
no2.The demand function of a manufactures production is P=1000-2q where P is the price (per unit) when Q units
are demanded (per week) by consumers. Find the marginal revenue when 250 units are produced

 

[JeffM]

no1.The sum of $3000 is placed in the savings account. If money worth 6% compounded semi annually, what is
he balance in the account after 7 year? Assume no other deposit and no withdrawals are made.
no2.The demand function of a manufactures production is P=1000-2q where P is the price (per unit) when Q units
are demanded (per week) by consumers. Find the marginal revenue when 250 units are produced

So what have you done so far. Hard to see where you are stuck when you do not show your work.