Twice a number increased by 4 is at least 10 more than a number

What are the critical values that correspond to a 95% confidence level and a sample size of 93? a. 65.647, 118.136 b. 59.196, 128.299 c. 57.143, 106.629 d. 69.196, 113.145

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?