How to do subtracting by adding up

Rachel bought 7 cookies and 5 muffins. The equation 7c+5m=10.45 represents the amount of money she spent. Jack bought 3 cookies and 1 muffin. The equation 3c+m=3.05 represents how much he spent.

Daniel, ryan, and sam are friends. daniel is ryan's brother. ryan is sam's brother. sam is not daniel's brother. how is this possible?

Which sentence uses a common adjective? A. You're wearing Michelle's socks. B. Did you watch the Irish dancers? C. Tony put the dirty plates in the sink.

You throw a flying disc into the air. It hit a tree branch on its way up an comes to rest on a roof. It stays on the roof for a minute before the wind blows it back to the ground. Sketch a graph of the height of the object over time.

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33.52 is what percent of 8

Write an algebraic equation for the situation: Daniel is six inches shorter than Ernie, how y'all is Daniel

Tom drank quarts of water and his sister Jane drank 1.75 quarts of water. Write the amount that Jane drank using a fraction. Who drank more water?

23 is 85% of what number?

Solve the equation - 5 (8 - 4a) = - 35