PLEASE PLEASE HELP I REALLY NEED IT PLEASE HELP I AM GIVING A BUNCH OF POINTS AND

Will mark brainliest if you answer ! the taco shop sold 198 lunches friday. this number is 3 more than 3 times the number they sold monday. let n represent the number of lunches sold monday. which equation shows an equality between two different ways of expressing the number of lunches sold on friday? a. n – 3 = 198 b. 3n – 3 = 198 c. 3n + 3 = 198 d. n + 3 = 198

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

Polygon abcd is a rectangle what is the area