Apencil costs $0.50. write a variable expression for the cost of x pencils. a. 0.40 + x b. 0.50 c. 0.50 • x d. 0.50 - x

Use the x-intercept method to find all real solutions of the equation. -9x^3-7x^2-96x+36=3x^3+x^2-3x+8

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?