Twice the sum of nineteen and twenty is seventy-eight in a symbol ​

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

X² + 4y² = 36 the major axis runs along: a) y=4x b) x-axis c) y-axis