In pauls bicycle shop, 40 bicycles are inspected. if 20 needed new tires and 30 needed gear reports, answer the following: a) what is the greatest number of bikes that could have needed both. b) least number that could have needed both . c) what is the greatest number of bikes that could have needed neither.

What is 1/2 x (6 x 4)+3 + 2 show your work

12. the amount of money in a bank account decreased by 21.5% over the last year. if the amount of money at the beginning of the year is represented by ‘n', write 3 equivalent expressions to represent the amount of money in the bank account after the decrease?

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.