At first, the ratio of john’s money to peter’s money was 4: 7 . after john spent half of his money and peter spent $60, peter had twice the amount of money as john. how much money did john have at first?

What power can you write to represent the volume of the cube shown? write the power as an expression with a base and an exponent and then find the volume of the cube

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.

How can you find the mean absolute deviation (mad) for this set of data?