The function models the cost in dollars, c, of 1 ounce of a certain chemical used in a laboratory. x represents the number of years since 2010. Does the cost of the chemical increase or decrease over time?

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

Suppose sat writing scores are normally distributed with a mean of 497 and a standard deviation of 109. a university plans to award scholarships to students whose scores are in the top 2%. what is the minimum score required for the scholarship? round your answer to the nearest whole number, if necessary.

Kayaks rent for $35 per day. which expression can you use to find the cost in dollars of renting 3 kayaks for a day?