The sales of a certain brand of tv satisfy the linear model y = 110x + 5600 where y represents the number of sales in year x, with x = 0 corresponding to 1982, x = 1 corresponding to 1983, etc. how many units did they sell in 1987? the number of sales in 1987 was

6150 units were sold on 1987.

Step-by-step explanation:

Given equation that models the number of sales after x years since 1982,

y = 110x + 5600 -----(1)

∵ The number of years from 1982 to 1987 is 5,

Thus, for finding the number of sales on 1987,

We must put x = 5 in the equation (1),

Thus, the number of units sold on 1987,

step-by-step explanation:

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.