Standards mastery Expressions and equations

• 5n + 10n

• 50n

• 50 + n

• 50 + 10n

which is Not correct

• 7x = 10 x

• 17 x

• x( 7 + 10)

• 7x + 10

• 18 + 3n

• n² + 18

• (3 x n) + (3 x 6)

• 3( 6 + N)

Which expressions are equivalent? Choose all that apply

• (4 x 8) + ( 4 x n) = 32 + 4n

• n( 8 + 4) = 8 + 4n

• (8 x n) + (8 x 4) = 8n + 32

• n(8 + n) = 8n + n²

Which statement are equivalent?

• 4m + 11 - 7m + 3m + 3 = 14m 14

• 5(3 -2y) = 15 -2y

• 16n - 2 + 9n = 2( 8n - 2) + 9n

• 6(2x - 5) = 12x - 30

11 + x = 50

• x = 39

• x= 30

• x = 23

• x = 20

Which situations will have more than one answer choice.?

• the total cost to buy t tickets for 8.50 each

• the number of ounces of tomato juice, j, in 2 quarts

• the greatest number of $6 notebooks, n, Tiffany can buy with $36.

• the number of pizzas to order, p, if each person eats 2 slices.

Tyra spends a total of $33 for three t-shirts. Each T- shirt costs the same amount of money. Which equation could be used to show this situation?

Kari is trying to solve the equation 34.25 + x = 87.

Choose all the reasons to solve the equation.

• Kari can add 34.25 to both sides of the equation

• what is the difference between 87 and 34.25

How many hours does it take James to mow Mrs. Chavez's lawn, if he charged her $6.75 and earns $13.50. Which equation fits the situation?

• 6.75h = 13.50

• 6.75 - h = 13.50