If a bank represents deposits with positive numbers and withdrawals as negative numbers what could 5(-20) represent.
A= Five deposits of $20
B= A $5 withdrawal followed by a $20 deposit
C= A $5 deposit followed by a $20 withdrawal
D= Five withdrawals of $20

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

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