Final answer:
To solve the inequality c/4 >= 7/10, we can multiply both sides of the inequality by 4 to eliminate the fraction. The solution is [2.8, +∞).
Step-by-step explanation:
To solve the inequality c/4 >= 7/10, we can multiply both sides of the inequality by 4 to eliminate the fraction. This gives us c >= 2.8. Since the inequality includes the equal sign, the solution is inclusive. Therefore, the solution in interval notation is [2.8, +∞).