A pencil costs $x and a notebook cost $4x. I spend $1 000 on pencils and $1 000 on notebooks. a. Write down the number of pencils I get in terms of x?
b. Write down the number of notebooks I get in terms of x?
c. If I get 15 more pencils than notebooks, how much does a pencils costs?

Which best explains why this triangle is or is not a right triangle?

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

Mrs. gehrke said cheddar weighs 16.8 pounds. he actually weighs 15.2 pounds. what is the percent error?