Please help me I’ll mark you as whatever it’s calls brainlest or whatever just help please

Step-by-step explanation:

We are given a point and a slope, so we can use the point-slope formula.

where m is the slope and (x₁, y₁) is a point the line passes through.

For this problem, the slope is -2 and the point is (5,7). Therefore:

Substitute the values into the formula.

We want to solve for y, because the standard form of a line is y=mx+b (where m is the slope and b is the y-intercept).

Distribute the -2.

7 is being subtracted from y. The inverse of subtraction is addition, so add 7 to both sides.

The equation of the line is y= -2x+17

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads