What is 56 rounded to the tens place

How many of the 250 grandparents in the population would you expect to prefer online shopping with merchant a? merchant a: 4 merchant b: 6 merchant c: 2 merchant d: 3 other: 5 none: 5 answer choices: a. about 4 b. about 8 c. about 40 d. about 21

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

Find the cosine function that is represented in the graph.