Which expression is equivalent to 28 + 12? A: 4 (7 + 3) B: 4 (24 + 8) C: 7 (4 + 12) D: 7 (21 + 5) YOU GET 30 POINTS IF YOU GET THIS ASAP!

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.

Solve the triangle. a = 21°, c = 105°, c = 5

Determine the domain and range of the given function. the domain is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}. the range is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}.