10x^2+9=499
Show me step by step please?

= 7

Step-by-step explanation:

10² + 9 = 499

10² = 499 - 9

10² = 490

² = 49

= 7

Hope this helps!

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a. -0.3 > -0.33

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