Practice Plus Use the graphs off and g to solve Exercises 81-88. Y y = f(x) 12 = g (x) 81. Find (f + g)(-3). 83. Find (fg)(2). 85. Find the domain off + g. 87. Graph f + g. 82. Find (g - f)(-2). 84. Find ( g 1(3). 86. Find the domain of I g 88. Graph f - g.

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

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

c. side angle side. u shares the same sides

y=-2x+1500

step-by-step explanation:

+1500

2 over one