Is this correct? If not can someone please explain to me why it’s wrong or how i can fix it?

Sketch one cycle if the cosine function y=2cos2theta

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41

One astronomical unit (1 au) is about 1.496 alt tag missing. kilometers. if you wrote this number of kilometers in regular decimal notation (for example, 528 and 3,459 are written in regular decimal notation), how many zeros would your number have?