Sarah had a balance of $155 in her bank account at the start of the week. she withdrew $65.50 on monday, $23.25 on wednesday, and $26.45 on thursday. on friday she deposits $ 165.30.
a) write an expression to represent sarah's spending.
b) simplify your expression using pemdas. how much is in sarah's account at the end of the week?
c) find the difference between sarah's bank account balance at the start of the week and her current balance.

The pyramid shown has a square base that is 24 centimeters on each side. the slant height is 16 centimeters. what is the lateral surface area?

Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 25002500 grams and a standard deviation of 800800 grams while babies born after a gestation period of 40 weeks have a mean weight of 27002700 grams and a standard deviation of 385385 grams. if a 3232-week gestation period baby weighs 21252125 grams and a 4040-week gestation period baby weighs 23252325 grams, find the corresponding z-scores. which baby weighs lessless relative to the gestation period?

Extra points! find the missing dimension! need asap