Ibeg !
2 - 7(3x - 4)
x = ?
tessa: 2−21x−28 why is she wrong?
bernette: −5(3x−4) why is she wrong?
lucy: 2−21x+28 why is she wrong?
what is the correct answer?
a. 2 - 7x
b. 2 - 7(-x)
c. -5(3x - 4)
d. 2 + 21x + 28
e. 2 + 21x - 28
f. 2 - 21x + 28

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations