Answer these following
1. what is (-7)^5 in expanded form
2. solve 2s^3 - 4r^2 if r = 1 and s = 5 (explain all steps)
3. how would you convince a fellow student that the number 0.57 is a rational number?

1: 4 if the wew 35 surfboards at the beach how many were short boards?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

Scott’s bank account showed a balance of $750 on sunday. during the next five days, he made one deposit of $140 and numerous withdrawals of $180 each. let x represent the number of withdrawals that scott made. write an inequality that can be used to find the maximum number of withdrawals that scott could have made and maintain a balance of at least $100. do not use a dollar sign ($) in your response.