Pam is playing with red and black rocks. the number of red rocks she has is three more than twice the number of black rocks she has. she has 42 rocks in all. how many red rocks does pam have? * a)13 b) 15 c)29 d)33

i'm not sure what i'm doing wrong ,because i'm not getting any of these answers.

What value of x is in the solution set of –5x – 15 > 10 + 20x?

Sheila wants to bake six muffins but the recipe is for 12 muffins . this means you only need half of the ingredients listed how much of the of each ingredient does she need? one cup and banana chips ,7 tablespoons oil , two eggs, 3/4 cups flour 1/4 cup walnuts show all you work and justify your answer using a baby toulmin.

Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?