Select the correct answer. Transversal t cuts parallel lines r and s. Which angles must be congruent to ∠2? A. ∠3, ∠6, and ∠7 B. ∠7 only C. ∠7 and ∠6 D. ∠3, ∠5, and ∠6

Translate this phrase into an algebraic expression. 21 more than twice goran's savings use the variable g to represent goran's savings. need to know fast.

I’m still confused on how to work the percentages

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.