45 a jcpenny dress originally costs $69.00, but the final price is $20.70. what is the discount percentage? (example: 50% off $20.00 is $10.00)

If square root x = -7, then x= -49 true or false

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?