Question

Math Help!!!!!!!

Answer 1

Answers and Explanation

(a) Betty’s expression:

Cost of guest = 10 × x + 10 × x + 10 × x

                    = 10x + 10x + 10x

cost of the venue = 80

Total cost = 10x + 10x + 10x + 80

(b) Dawnie’s expression:

Cost of the location  = $80

Number of guests = x + x + x

Cost of all guests = $10(x + x + x)

Total cost = 10(x + x + x) + 80

(c) Joan’s expression:

Cost of the location = 80

Cost of guest = 10 × x + 10 × x + 10 × x

                    = 10x + 10x + 10x

                    = x(10 + 10 + 10)     ⇒  After factoring out x.  

Total cost = x(10 + 10 + 10) + 80