PLEASE HELP!!
match each question with its solution.
1. n/8 + 1/2 =-3 1/2
2. -1.4n + 2.1 =6.58
3. 5.7n + 4.1 = 2.96
4. 4n - 2 3/4 = -22 3/4
match answer in photo

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Do 12/14 and 8/10 have the same value? explain your answer.

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