A. true B. true
C. false
D. true

I just need good explanations
URGENT NOW HELP

Jessica is a custodian at oracle arena.she waxes 20 m2 of the floor in 3/5 of an hour. jessica waxes the floor at a constant rate.at this rate how many sqaures meters can she wax per hour

What value is equivalent to 5 + [5 × (4 + 2)]? a) 35 b) 45 c) 60 d) 110

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.