What is the answer to this problem 8bsquared-5b-10

Tomas is making trail mix using granola and walnuts. he can spend a total of $12 on the ingredients. he buys 3 pounds of granola that costs $2.00 per pound. the walnuts cost $6 per pound. he uses the equation to represent the total cost, where x represents the number of pounds of granola and y represents the number of pounds of walnuts. he solves the equation for y, the number of pounds of walnuts he can buy. answer- b tomas added 6 to both sides of the equation instead of subtracting 6. just took the test

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28