Alysha has a collection of dime and nickel rolls that she’d like to take

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?