If a projectile is launched vertically upwards from the ground with initial velocity of 65 ft per sec, neglecting air resistance, its height s (in feet) above the ground t second after the projection is given by s=-16t^2 +65t. Which equation should be used to determine the height of a projectile reaches after 2 sec

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?