Answer:
CeCe's is cheaper than Banquet Chefs when 31x+425<28x+590. That is, when x < 55. She should choose CeCe's is she has fewer than 55 guests. She should choose Banquet Chefs is she has more than 55 guests. If she has exactly 55 guests, it does't matter who she chooses.
Step-by-step explanation:
Solve the problem by plugging in numbers for (x) in the equation given.
31 * (54) + 425 = 2,099, which is < 28 * (54) + 590 = 2,102
31 * (56) + 425 = 2,161, which is NOT < 28 * (56) + 590 = 2,158
31 * (55) + 425 = 2,130 which is = 28 * (55) + 590 = 2,130
Therefore, CeCe's is cheaper anytime (x), which represents the number of guests, is less than 55, or x < 55.
Banquet is cheaper anyime (x) is more than 55, or x > 55.
If there are 55 guests exactly or x = 55, both will be the same price.