Using the formulas from above, answer the following questions. (In picture) Will give brainliest for full answer posting for 4th time :(

Ateacher has $80 to buy workbooks. each work book cost $3. if she buys as many workbooks as possible, how much money does she have leftover? a) $2 b) $4 c) $6 d) $8

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?