I, myself self am not too good at Sin, Con, and Tan so I could use some help on double-checking if this is correct??

The expression 42 plus 57 shows how much money nate spent at a store .which expression also shows how much money nate spend

When eating out, record the total cost of your meal (before tip) and the tip that you left. determine the percent of the cost of the meal that you left as a tip.

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?