How many shirts must be purchased so that the cost is the same for both companies company 1 $ per shirt 8.00 shipping 13.00 company 2 $ per shirt 7.50 shipping 16.00

How can we find the measure of an exterior angle if we know the measurement of an interior angle

What is the standard form of -5x^2+2x^4-11+x^3+3x

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?