Courtney has $12 to spend at the concession stand. She wants to buy a combination of air heads, x, and popcorn, y.
An air head costs $.25 and popcorn costs $2. Which
inequality represents this situation?

What is the number 321,000,000 in scientific notation? also what is the number? ?

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

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?