7th grade math

posted by .

Simplify each expression.

1.
2z - 3y - 8z + y

2.
9 - 7t + 1 + 4t

3. For the summer, Tia buys 3 T-shirts and 2 pairs of shorts. Her brother buys 4 T-shirts and 1 pair of shorts. Define and use variables to represent the total cost.

I have no idea how to do this! Please help!

  • 7th grade math -

    1.
    2z - 3y - 8z + y

    Combine like terms:

    2z - 8z - 3y + y

    -6z - 2y

    Do the second problem the same way.

    3. This problem isn't clear. Do we assume that all T-shirts cost the same? Do all shorts cost the same? Please clarify. You may need to ask your teacher about this one.

  • 7th grade math -

    so is:
    #2.
    10 - 3t

  • 7th grade math -

    Yay! You're right! :-)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. 5th grade math

    T = t-shirts & S = shorts T + T + S + S = $42 T + S + S + S = $45 HOW MUCH IS A PAIR OF SHORTS?
  2. 5th grade math

    T = t-shirts & S = shorts T + T + S + S = $42 T + S + S + S = $45 HOW MUCH IS A PAIR OF SHORTS?
  3. math

    there are 3 shirts,2 caps,4 pairs of shorts.how many different outfits can wear ?
  4. math

    Andrea buys four shirts and three pairs of pants for $85.50. She returns the next day and buys three shirts and five pairs of pants for $115.00. What is the price of each shirt and each pair of pants?
  5. Math

    You have 2 pairs of shorts, 2 pairs of shoes, 2 shirts how many combinations could you wear
  6. math

    Kool Klothes has determined that the revenue function for selling x thousand pairs of shorts is R(x) =-5x^2 + 21x. The cost function C(x) = 2x + 10 is the cost of producing the shorts. How many pairs of shorts must the company sell …
  7. Math

    Kool Klothes has determined that the revenue function for selling x thousand pairs of shorts is R(x) = -5x^2 + 21x. The cost function C(x) = 2x + 10 is the cost of producing the shorts. a) How many pairs of shorts must the company …
  8. math

    Kool Klothes has determined that the revenue function for selling x thousand pairs of shorts is R(x) = -5x^2 + 21x. The cost function C(x) = 2x + 10 is the cost of producing the shorts. a) How many pairs of shorts must the company …
  9. Math

    David paid a total of $60 for 4 similar T-shirts and 3 similar pairs of shorts. Each pair of shorts cost
  10. MATH

    Sheryl has 7 more than one-third as many pairs of shorts as Katie has. If Katie has pairs of shorts, which expression describes the number of pairs of shorts Sheryl has?

More Similar Questions