Nata spent $28 on 2 dvds. at this rate, how much would 5 dvds cost? at what rate did she spend her money

Use the knowledge of x- and y- intercepts to choose the correct graph of the equation 3x+6y=6

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

What is the number 321,000,000 in scientific notation? also what is the number? ?