Problema Solution
PG.6
4.Soda at a resturant costs $2.00 and refills are 50 cents.
a. Write an equation in intercept form for calculating the total cost, C, for soda with d representing the number of drinks.
b. If Allen has $3.oo how many sodas can he buy?
Answer provided by our tutors
let 'd' be the number of drinks and we know that 50 cents = $0.5
a. since we buy 1 drink and then order (d-1) refills we have the following equation
C = 0.5(d-1) + 2 in intercept form
b. Allen has $3.oo that he spends thus
C = 3
0.5(d - 1) + 2 = 3
by solving the equation we find
d = 3
Allen bought 1 soda and ordered 2 refills
click here to see the step by step solution of the equation