60inches to 30inches find the percent of change. round to the nearest whole percent

Solve 3x-18=2y and 5x-6y=6 by elimination show work

Janet is rolling a number cube with the numbers one through six she record the numbers after each row if she rolls of keep 48 times how many times should she expect to roll a 4

A6 ounce bottle of dressing costs $1.56 a 14 ounce bottle costs $3.36 a 20 ounce bottle costs $5.60 which has the lowest cost per ounce