1. How long is the baseball in the air? 5 seconds
A baseball coach uses a pitching machine to simulate
pop flies during practice. The baseball is shot out of the
pitching machine with a velocity of 80 feet per
second. The quadratic function y = –16x2 + 80x
models the height of the baseball after x seconds.
O4 seconds
03 seconds
O 6.2 seconds
2. What range makes sense for this scenario?
Os y s 80
Oy > 0
Oosy s 100
Oosy s5

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.

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