3 Select the correct answer.
The displacement function of a rock thrown straight up in the air is given by f() = -2R2 + 15.7t meters, where tis measured in seconds. Find the
total distance travelled by the rock when it reaches the ground.
ОА.
30.81 m
OB
31.40 m
OC. 61.62 m
OD. 92.43 m
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answer: can and shows the work

step-by-step explanation:

b. would be the answer : )

step-by-step explanation:

step 1: add -16x to both sides.

16x−4y+−16x=64+−16x  

−4y=−16x+64

step 2: divide both sides by -4.

−4y /-4 = -16x + 64/-4

answer:   y=4x−16

hope i'm right

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

i'm a sophomore in connections, i'd recommend checking on jishka.com they have a large range of questions and answers from our school.