Select all the expressions that are equivalent to -21
4^
3
4^
-7
a( 4^
-18
b)4^
-24
c)4^
-7
d)1/4^

146%

step-by-step explanation:

560

step-by-step explanation:

giggidy

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

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.