Add the expression (algebra)
1. (2x + 5) + (x + 4)
2. (3y - 5) + (2y + 4)
3. (4a + 12) + (-6a - 13)

Subtract the expression
4. (3x + 3) - (4x + 6)
5. (8y - 7) - (y - 4)
6. (3b + ) - (2b + 7)

Factor each expression
7. 16y - 8
9. -12c - 8

Martin likes to make flower bouquets that have 3 daffodils and 4 tulips per vase. a daffodil has a mass of d grams, a tulip has a mass of t grams, and the vase has a mass of u grams. the expression 5(3d + 4t + v) describes the mass of 5 bouquets. match each amount in the situation with the expression that represents it. situation expression number of bouquets mass of one bouquet mass of the tulips in one bouquet 4t mass of the daffodils in one bouquet 3d + 4t + v

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.

Indicate the formula for the following conditions: p^c(n,r)=