Alguien sabe cuanto es 2 + (9² - 4), porfa ayúdenme;(

An unknown number x is at most 10. which graph best represents all the values of x? number line graph with closed circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the right. number line graph with open circle on 10 and shading to the left. number line graph with closed circle on 10 and shading to the left.

Find the solution on the interval [0, 2pi)

The area of each triangle is 7 square units. the surface area of the triangular prism is