Melody spent $163 on groceries one week and $156 on groceries the next week. estimate how much more she spent on groceries the first week by rounding to the nearest ten and then subtracting.

Which problem could be  solved  by evaluating the expression  7×(−3)7×-3?

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

Fatima plans to spend at least $15 and at most $20 dollars on sketch pads and pencils. if she buys 2 sketchpads, how many pemcils can she buy while staying in her price range? fatima can buy between and pencils. ? (type whole numbers. use ascending? order.)