The amount of Jen's monthly phone bill is normally distributed with a mean of $70 and a standard deviation of $9. What percentage of her phone bills are between $43 and $97?

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Let hh represent the number of hummingbirds and ss represent the number of sunbirds that must pollinate the colony so it can survive until next year. 6h+4s > 746h+4s> 74 this year, 88 hummingbirds pollinated the colony. what is the least number of sunbirds that must pollinate the colony to ensure that it will survive until next year?

How much is $1200 worth at the end of1 year,if the interest rate is 5.5% is compounded quarterly.