While working on a roof, jason dropped his hammer. the hammer's fall can be represented by the
equation h(t) = -16t2 +48(where t = time in seconds and h = height in feet) how long will it take the
hammer to reach the ground? how high up was the hammer when it initially fell from the roof? (round to
two decimals if necessary)

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.

X- 7 is the only expression not equivalent to othersother expressions are all equivalent to 7 - x- x + 7 = 7 - x7 + (- x) = 7 - x