If Z is the standard normal variable and P(Z > k) = 0.8186, what is the value of k?

Kayla and alberto are selling fruit for a school fundraiser. customers can buy small boxes of grapefruit and large boxes of grapefruit. kayla sold 3 small boxes of grapefruit and 1 large box of grapefruit for a total of $65. alberto sold 1 small box of grapefruit and 1 large box of grapefruit for a total of $55. what is the cost each of one small box of grapefruit and one large box of grapefruit?

Factor and solve to find roots x squared -x - 90 =0

Why is it so easy to buy on impulse and overspend with a credit card? what could you do to counteract this tendency?