Apiggy bank contains $14.55 in quarters dimes and nickels. if there was three more than twice as many dimes as nickels and three less than three times as many quarters as nickels , how many of each coin was in the piggy bank

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

Extra points! find the missing dimension! need asap

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?