3 children build a giant sandcastle in 4 hours, how long will it take... a)1 child, b)5 children

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10

55 bridesmaids want to make 325 325 decorations for a wedding. each decoration takes about 212 2 1 2 minutes to make. which response gives the best estimate for the amount of time each bridesmaid will spend making decorations?

Which of these is and example of a literal equation? a) 6+30=6^2 b)3x-4y c)12=9+3x d)ax-by=k