moe has x hockey cards. jeff has 3x hockey cards. the number of cards jeff has is equal to the number of cards moe has plus 20. write an equation for this situation and then determine the number of cards moe and jeff have.​

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean

The diagram represents the polynomial 4x2 + 23x – 72. what is the factored form of 4x2 + 23x – 72? (4x + 8)(x – 9) (4x – 8)(x + 9) (4x + 9)(x – 8) (4x – 9)(x + 8)