Identify the trinomial that is a perfect square. asap a.64x^2 − 90x + 25 b.64x^2 − 70x + 25 c. 81x^2 − 70x + 16 d. 81x^2 − 72x + 16

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

According to the data set, where should the upper quartile line of the box plot be placed?