Careful, you picked a partial answer; this only gives 2S, not 2S + 3H. Review Solving Equations.
This is a multi-step problem, fraught with danger if you don’t slow down and take your time. First of all, you know that H + S = 32, and that H is 10. By substituting in, you see that 10 + S = 32, and by solving for x (or S, in this case) and subtracting 10 from both sides of the equation, you find that S is 22. Now you can put S = 22 and H = 10 into your equation. You get 2(22) + 3(10) = ?. Multiply it out and you get 44 + 30, or 74.
[ B, C] Review Solving Equations.
This is a multi-step problem, fraught with danger if you don’t slow down and take your time. First of all, you know that H + S = 32, and that H is 10. By substituting in, you see that 10 + S = 32, and by solving for x (or S, in this case) and subtracting 10 from both sides of the equations, you find that S is 22. Now you can put S = 22 and H = 10 into your equation. You get 2(22) + 3(10) = ?. Multiply it out and you get 44 + 30, or 74.
