Help please can anyone help me answer a few questions for algebra 2 sem 2pretest

Which of these side lengths could form a triangle a) 2 cm , 2 cm , 4 cm b) 3 cm , 5 cm , 10 cm c) 3 cm , 4 cm , 5 cm d) 4 cm , 8 cm , 15 cm

Recall that two angles are complementary if the sum of their measures is? 90°. find the measures of two complementary angles if one angle is twenty dash nine times the other angle.

Rewrite the point-slope equation in slope-intercept form: y - 3 = 2(x + 4)